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Cubic crystal system (3,620 words) [view diff] exact match in snippet view article find links to article

the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest

anions instead.) This framework forms a zeolite cage structure. Each unit cell has two cavities, which have almost the same structure as the borate cage

forms. The low temperature form is below 652 °C. It is orthorhombic with unit cell dimensions a=6.69, b=6.76, and c=7.06 Å. Dysprosium dichloride can be

larger cell volume than either anatase or rutile, with 8 TiO2 groups per unit cell, compared with 4 for anatase and 2 for rutile. Iron (Fe), tantalum (Ta)

approximating a large (infinite) system by using a small part called a unit cell. PBCs are often used in computer simulations and mathematical models.

which appear in the tables above. Regarding the number of atoms in the unit cell, structures in the rhombohedral lattice system have a rhombohedral primitive

atoms in each primitive cell, separated by ⁠1/4⁠ of the width of the unit cell in each dimension. The diamond lattice can be viewed as a pair of intersecting

structure of diamond is a face-centered cubic lattice having eight atoms per unit cell to form a diamond cubic structure. Each carbon atom is covalently bonded

below 1500K. When decompressed to 66 GPa it decomposes to solid FeH3. The unit cell is tetragonal with space group I4/mmm. Iron hydrides Pépin, C. M.; Geneste

formulas per unit cell. δ-Bi2O3 has a defective fluorite-type crystal structure in which two of the eight oxygen sites in the unit cell are vacant. ε-Bi2O3

One repeating unit of this hypothetical periodic system is called a unit cell. One such cell is chosen as the "central cell" for reference and the remaining

with space group Pnam (number 62), with unit cell dimensions: a = 9.053 Å b = 8.036 Å and c = 7.834 Å. The unit cell volume is 569.8 Å3 with four formula

pressure conditions (P>11 GPa), Hauerite undergoes a large collapse in unit cell volume (22%) driven by a spin-state transition. Warr, L.N. (2021). "IMA–CNMNC

distinct Si atoms and five different oxygen positions in the unit cell. Although the unit cell is close to being hexagonal in shape ("a" and "c" are nearly

Ca5(PO4)3(OH), often written Ca10(PO4)6(OH)2 to denote that the crystal unit cell comprises two entities. It is the hydroxyl endmember of the complex apatite

CrHx with x between 0.5 and 1. The lattice for the hexagonal form had unit cell dimensions a=0.271 nm and c=0.441 nm. The crystal form has been described

parameter is shorter by approximately the square root of 2, so the α unit cell contains only 4 silicon atoms rather than 8.) The choice of axis is arbitrary

on the unit cell. In some compounds the layers are not quite aligned, but repeat after three layers giving a 3R form, with a larger c unit cell height

transition zone. Almandine crystallizes in the cubic space group Ia3d, with unit-cell parameter a ≈ 11.512 Å at 100 K. Almandine is antiferromagnetic with the

causes taenite to have a face-centered unit cell, whereas kamacite's higher iron content causes its unit cell to be body centered. This difference is

system. The family of crystals it matches is PbCl2. The dimensions of the unit cell are a: 7.455 Å, b: 4.2320 Å, c= 8.964 Å. The compound has the unusual

(59 ft) stainless steel clad spheres are connected in the shape of a unit cell that could represent an iron crystal magnified 165 billion times. Steel

the x value in La1−xSrxMnO3, the unit cell of LSMO can be rhombohedral, cubic, or hexagonal. This change in the unit cell is explained on the basis of the

solid-state physics and crystallography, a crystal structure is described by a unit cell repeating periodically over space. There are an infinite number of choices

group Pa3; the N2 molecules are located on the body diagonals of the unit cell cube. At low temperatures the α-phase can be compressed to 3500 atm before

pair of sides formed from chains 4, 5, 6, 8 or more octahedra wide. The unit cell has six manganese Mn4+ sites and twelve oxygen O2− sites constituting

common endmembers is written as Ca10(PO4)6(OH,F,Cl)2, and the crystal unit cell formulae of the individual minerals are written as Ca10(PO4)6(OH)2, Ca10(PO4)6F2

P21/c and four formula units per unit cell. At 30 GPa the unit cell has a=4.771 b=8.079 c=7.070 Å and β=91.32°. The unit cell volume is 272.4 Å3 and density

dichalcogenide (TMD). ReS2 was isolated down to monolayers which is only one unit cell in thickness for the first time in 2014. These monolayers have shown layer-independent

sodium chloride, with four iron atoms and four silicon atoms in each unit cell. Whereas in sodium chloride the eight atoms are at the corners of a cube

octant of the unit cell, i.e., at the 8a position (1/4, 1/4, 1/4); thus, there are eight such clusters (336 boron atoms) per unit cell. Two independent

In this notation, the surface unit cell is given as multiples of the nonreconstructed surface unit cell with the unit cell vectors a and b. For example

fluids. They have a large unit cell of 3.51 nanometers and an isometric crystal system. This is the largest known inorganic unit cell apart from protein structures

elemental metals in having a very complex unit cell, with 58 atoms per cell (29 atoms per primitive unit cell) in four different types of site. It is paramagnetic

unit cell with three formula units per cell (Z = 3), and some a smaller unit cell with only 1.5 formula units per cell (Z = 1.5). For the larger unit

coordination number (ACN) of 13.5 and eight A3B stoichiometry atoms per unit cell where two B atoms are surrounded by CN12 polyhedral (icosahedra), and

reduced with dioxane. Rhenium trioxide crystallizes with a primitive cubic unit cell, with a lattice parameter of 3.742 Å (374.2 pm). The structure of ReO3

temperatures above 228 °C (442 °F), the structure is isometric with a unit cell that is about 5.50 Å on an edge. This structure is based on cubic close-packed

Although both variants are triclinic, they differ in the volume of their unit cell, which is slightly larger for the 'high' form. The 'high' form can be

with unit cell parameters a=12.451 b=7.814 c=12.826 Å α=108.13. Unit cell volume is 1186 Å3 at -100 °C. There are four molecules per unit cell. It reacts

observed (Type H). The unit cell of Type I consists of 46 water molecules, forming two types of cages – small and large. The unit cell contains two small

which TiO6 octahedra and PO4 tetrahedra are arranged in a rhombohedral unit cell. The LTP crystal structure is stable down to 100 K and is characterized

Fm3m with the lattice parameter a = 5.22 Å and four formula units per unit cell. List of minerals Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols"

X=halogen ions). It crystallizes in a hexagonal space group P63/mmc with unit cell lengths a = 7.403 Å and c = 18.406 Å, with one cadmium ion having D3d

the orthorhombic crystal system, with a unit cell of dimensions a = 9.13 b=5.54 and c = 7.31 Å. The unit cell volume is 369.7 Å3. Distance from the radium

unit cell of vanadinite, the smallest divisible unit that possesses the same symmetry and properties, is in the form of a hexagonal prism. The unit cell

the size and rotational alignment of the adsorbate unit cell with respect to the substrate unit cell. Quantitatively, where the intensities of diffracted

system. The unit cell has dimensions a=7.376, b=3.9622 c=15.352 Å with volume 448.7 Å3. There are four of the formula in each unit cell (Sm8S12). The

with Fe2+ cations, occupy octahedral sites. The unit cell consists of thirty-two O2- ions and unit cell length is a = 0.839 nm. As a member of the inverse

8 °F), a transformation known as tin pest). White tin has tetragonal unit cell. Cornwall portal Chambers's encyclopædia: A dictionary of universal knowledge

to the surface. Hence given a suitable initial polygon inscribed in a unit cell periodic surfaces can be constructed. The Schwarz surfaces have topological

volume (REV) (also called the representative volume element (RVE) or the unit cell) is the smallest volume over which a measurement can be made that will

include within similarly modified nickel mines of the Kambalda area. The unit cell of nickeline is used as the prototype of a group of crystalline solids

in the form of pentadecahedra. Calculations have shown that there is a unit cell of the pentadecahedron that is stable in the crystal. There are 23,833

\beta } -Mg2Al3 is a complex metallic alloy which crystallizes in cubic unit cell with 1168 atoms per cell. If the Wyckoff positions were fully occupied

Sykesville. Space group: Fd3m. Unit cell parameters = a = 9.48 Å, Z = 8. Unit cell volume: V = 851.97 Å3 (calculated from unit cell parameters). The linnaeite

studies have 58 atoms per unit cell. Sulfur atoms are in three nonequivalent locations, containing 12, 6, and 8 atoms per unit cell. The later study put a

inversion sites and calcium ions occupy the M2 site on mirror planes. The unit cell is somewhat larger than for the calcium free olivines forsterite and fayalite

sometimes characterized as a solid that has one "half molecule" of water per unit cell. An example of this is calcium sulfate hemihydrate (CaSO4·0.5H2O or 2CaSO4·H2O)

so the unit cell is almost brick-shaped (as for the orthorhombic system). Different sources give slightly different values for the unit cell parameters

("low-chalcocite") has a complex structure with 96 copper atoms in the unit cell. The hexagonal form, stable above 104 °C, has 24 crystallographically

lead atoms are then disbursed within the layers, forming a hexagonal unit cell, with a lead atom in each of the corners. The density of the crystal is

Unit cell

properties and the unit-cell dimensions but further studies argue that it is different with respect to chemical formula and unit-cell volume. The chemistry

R3m. The reported lattice parameters (the lengths of the sides of the unit cell) vary in detail according to the source, but all agree that normal plumbogummite

Mg3Pr, Cu3Sb, Fe3Si, and AlFe3, as well as by the hydride LaH3.0. The unit cell is face-centered cubic with Bi at the face centers and vertices, and F

wrong. For example, if Alice chooses a unit cell with positive ions at the top and Bob chooses the unit cell with negative ions at the top, their computed

criteria for conductors, such as having an odd number of electrons per unit cell. The model was originally proposed in 1963 to describe electrons in solids

Lamprophyllite is monoclinic, The mineral also has an orthorhombic polytype Unit-cell parameters mainly depend from the cationic composition in the interlayer

sequence of those configurations defines the crystal structure, where the unit cell is the shortest periodically repeated sequence of the stacking sequence

Fe3+ 12O2− 19. The Fe3+ centers are ferrimagnetically coupled, and one unit cell of BaM has a net magnetic moment of 40μB. This area of technology is usually

monoclinic crystalline structure with a unit cell volume of 524.16 Å3. Additional specifications for this unit cell are as follows: a = 8.87 Å, b = 5.64

as LaMnO3+ẟ. These vacancies generate a structure with a rhombohedral unit cell in this perovskite. A temperatures below 140 K, this LaMnO3+ẟ semiconductor

structure built of eight icosahedra at the apexes of the rhombohedral unit cell. Each icosahedron is composed of twelve boron atoms. Two oxygen atoms

face-centered positions of the unit cell and Mg centers occupy eight tetrahedral sites in the interior of the unit cell. The coordination numbers of Si

The unit cell of rutile. Ti atoms are gray; O atoms are red.

unit cell is of a hexagonal form with a = 11.26 and c = 21.48 with space group P6 3/mmc and Z = 2, where Z is a number of formula units per unit cell

groups at the Cl sites. The unit cell consists of 44 atoms aligned in a primitive cubic Bravais lattice, with unit cell length 9.15462 Angstroms. The

Sodium aluminium hexafluoride unit cell

g., at q=(½,0,0), the resulting broken symmetry is a multiple of the unit cell along that axis. Such a modulation is called a commensurate superstructure

garnets, andradite crystallizes in the cubic space group [[Ia3d]], with unit-cell parameter of 12.051 Å at 100 K. The spin structure of andradite contains

elements only at the vertices of the unit cell. These structural elements are made up of two formula units (Z = 2). Unit cell parameters are a = 8.69 Å, b =

determined. The unit cell of titanium disulfide is 3.407 by 5.695 angstroms. The size of the unit cell decreased at 17.8 GPa. The decrease in unit cell size was

with a pair of flat concentric c-shaped sheets, placed on each side of a unit cell. The unit cells are stacked on top of each other by a length, l. The final

6 or 7 oxygen atoms; there are 7 inequivalent metal polyhedra in the unit cell. The resulted layers are parallel to (110) planes in pyroxferroite, whereas

The Metrical Matrix uses the basis vectors of the unit cell dimensions to find the volume of a unit cell, d-spacings, the angle between two planes, the angle

chlorine gas chemical transport at 848 K, it has a monoclinic form with unit cell dimensions a = 8.570 Å, b = 8.908 Å and c = 12.0521 Å, β = 91.05°, and

a rectangle whose lengths and widths are integer multiples of a (the unit cell edge length) is drawn encompassing the site of the original dislocation's

crystals with space group P21lc with unit cell dimensions a=8.723 Å b=8.940 Å c=13.981 Å, β = 94.91°. Each unit cell contains two formula units Ce2O(NO3)6(H2O)3

pyramidal class. This means that all of the edge lengths (a,b,c) of the unit cell are different in length and intersect at right angles to each other. The

the yellow sulfide orpiment, but is a distinct chemical compound. The unit cell of realgar, showing clearly the As4S4 molecules it contains Cluster of

zinc and sulfur atoms that are stacked in an ABABABABAB pattern. The unit cell parameters of wurtzite are (-2H polytype): a = b = 3.81 Å = 381 pm c =

unit cell structures as well as the artistic fields of origami and kirigami. While early mechanical metamaterials had regular repeats of simple unit cell

space group Pncn. The unit cell dimensions are a = 13.5 Å, b = 26.9 Å, c = 5.24 Å, and α = 90°, β = 90°, γ = 90°. The standard unit cell volume is equal to

which was invented by Peter J.W. Noble in 1968, where each pixel sensor unit cell has a photodetector (typically a pinned photodiode) and one or more active

with a 2-atom unit cell, as found in e.g. chromium, iron, and tungsten Face-centered cubic crystal structure, with a 4-atom unit cell, as found in e

The unit cell of baryte

three-dimensional coordinates as well as experimental information, such as unit cell dimensions and angles for x-ray crystallography determined structures

orthorhombic structure with unit cell sizes a = 5.482 Å, b = 8.237 Å, c = 6.147 Å. The cell volume is 277.6 Å3 with four formula per unit cell. Nickel chromate is

determine the atomic structure of a crystalline material and to refine the unit cell and has the added advantage of checking phase-purity. Generally, the intensities

The space group is P21/n. The unit cell dimensions are a=11.751 Å b=9.060 Å c=29.522 Å, and β=94.589°. Each unit cell contains two molecules. In the

specific gravity of 7.83. It is also known as placodine and Temiskamite. The unit cell is of symmetry group P41212 or P43212. It has the chemical formula: Ni11As8

parameters a = 547.3 pm, b = 637.2 pm, c = 341.6 pm, and β = 91°. Each unit cell contains two cyanate ions and two silver ions. The silver ions are each

lattice parameters a = 4.75 Å and c = 12.982 Å at standard conditions. The unit cell contains six formula units. The toughness of corundum is sensitive to

form has monoclinic crystal structure, with the P21/a space group. The unit cell parameters at 273 K are: a = 650.7 pm, b = 1779 pm, c = 837.7 pm, β =

helimagnet. If the spiral's period is some rational multiple of the crystal's unit cell, the structure is commensurate, like the structure originally proposed

patterns made this way are based on tessellations, tiling the plane with a unit cell and leaving no gaps. Because the tiling makes use of translation and rotation

presence of more than one (interacting) equivalent molecular entity in the unit cell." In the period 1958–1960 he developed the theory of collective excited

hexagonal structure (Pearson symbol hP24, Space group P-62c No 190). Its unit cell is approximately a combination of two vertically stacked basic NiAs-type

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group C2/c Unit cell a = 9.699, b = 8.844 c = 5.272 [Å] β = 106.97°; Z = 4 Identification Color

b and c are lattice parameters, Z is the number of formula units per unit cell, density is calculated from X-ray data. The low-temperature cubic form

Structure of β-R boron Structure of γ-boron α-rhombohedral boron has a unit cell of twelve boron atoms. The structure consists of B 12 icosahedra in which

'small unit cell' form, metal-free 2fk1: Structure of the Alzheimer's Amyloid Precursor Protein (APP) Copper Binding Domain in 'small unit cell' form,

lattice constants a = 0.491 nm, c = 0.3385 nm, Z = 2 (two formula units per unit cell). Lead dioxide is used in lead acid batteries and electrochemistry, but

crystals are cubic, with unit cell dimension 1.5263 nm and has density 3064 kg·m−3. It melts with decomposition at 1542 °C. The unit cell contains 8 cyclic Al6O1818−

forsterite looking along the a axis. Oxygen is shown in red, silicon in pink, and Mg in blue. A projection of the unit cell is shown by the black rectangle.

VY O4 in the case of xenotime) as zircon. Crystal structure of zircon Unit cell of zircon Scanning electron microscope image of zircon Unusual olive-green

acetyl-CoA pathway. Greigite has the spinel structure. The crystallographic unit cell is cubic, with space group Fd3m. The S anions form a cubic close-packed

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/c Unit cell a = 12.82 Å, b = 9.351(1) Å c = 8.608(2) Å; β = 104.84(2)°; Z = 4 Identification

compounds indicating a degree of electron delocalisation. Cs7O has a unit cell containing a Cs11O3 cluster and 10 Cs atoms. The cluster can be visualised

hexafluorosilicate. Its symmetry is 32/m. The space group is P3m1. The a-axes in the unit cell are 5.784 ± 0.005 Å (angstroms), and the c-axis is 4.796 ± 0.006 Å. The

Huttonite crystallizes in the monoclinic system with space group P21/n. The unit cell contains four ThSiO4 units, and has dimensions a = 6.784 ± 0.002Å, b = 6

electrons in each unit cell. If the number of electrons is odd, we would then expect that there is an unpaired electron in each unit cell, and thus that

fayalite looking along the A axis. Oxygen is shown in red, silicon in pink, and iron in blue. A projection of the unit cell is shown by the black rectangle.

Also, the original orientation of the unit cell is critical as the toughening effect cannot occur if the unit cell is already aligned with the tensile stress

with space group I2/a, unit cell dimensions a = 0.55153 nm, b = 1.12388 nm, c = 0.51184 nm, β = 95.731°, with formulas per unit cell Z = 4. There is a metastable

requires special-purpose codes. The Variational Asymptotic Method for Unit Cell Homogenization (VAMUCH) and its development, Mechanics of Structural Genome

Rhenium(IV) chloride Unit cell of Rhenium(IV) chloride. Names Other names rhenium tetrachloride Identifiers CAS Number 13569-71-6 3D model (JSmol) Interactive

displacement of atoms within the unit cell. Notably, pure shuffles typically do not induce a modification in the shape of the unit cell; instead, they predominantly

66053906660×10−24g/dalton×238.0495599 daltons/atom×16 atoms/unit cell)/(319.96 Å3/unit cell × 10−24cc/Å3) or 19.8 g/cc. Miotla, Dennis (April 21, 2008)

account for the varying path lengths from the feeding antenna to each unit cell). A progressive phase shift can be applied to the unit cells to steer

and four octahedral sites per formula unit (but eight times as many per unit cell). The tetrahedral spaces are smaller than the octahedral spaces. B ions

fluoride; unit cell expanded by a unit of 3. View of extended packing structure of calcium fluoride down a separate axis; expanded unit cell. Rock-salt

Gold(I) sulfide unit cell

construct a cell of two interlocked cubes – 8 Na and 8 Cl – as one's unit cell. This will give the correct answer but is computationally wasteful. By

Lead tetrafluoride Unit cell of lead tetrafluoride Names IUPAC name Tetrafluoroplumbane Other names Lead(IV) fluoride Lead tetrafluoride Tetrafluoridolead

pink. The crystal structure described by Kato is the equivalent of a unit-cell-twinned sonolite in which the cells are related by a b/4 glide plane.

structure was X-ray diffraction with a resolution of 2.3 angstroms. The unit cell values and angles are provided in the following table: The role of the

Crystal class Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Fm3m Unit cell a = 5.4682 Å; Z = 4 Identification Color Steel-black to velvet-black,

110\rangle |={\frac {a{\sqrt {2}}}{2}}} Where a is the lattice constant of the unit cell. Slip in body-centered cubic (bcc) crystals occurs along the plane of

is P21/c, which is monoclinic. The unit cell contains four molecules with a total volume of 386.6 Å3. The unit cell dimensions are a = 4.6663 Å, b = 8

classification 9.ED.20 Crystal system Orthorhombic Unknown space group Unit cell a = 5.7 Å, b = 8.9 Å, c = 6.7 Å; Z = 1 Identification Color Blue, cyan

Crystal class Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Fd3m Unit cell a = 9.43 Å; Z = 8 Identification Color Steel gray to gray violet Crystal

Unit cell, ball and stick model of actinium(III) oxide

Triclinic Crystal class Pinacoidal (1) (same H-M symbol) Space group P1 Unit cell a = 9.82, b = 9.82 c = 17.31 [Å], α = 99.209(2)° β = 94.67(2)°, γ = 119

Monoclinic Crystal class Domatic (m) (same H-M symbol) Space group Cc Unit cell a = 16.427(2), b = 12.478(2) c = 9.975(1) Å; β = 115.56(1)°; Z = 4 Identification

based on an assessment of an oxidative stress at the level of the life unit - cell in order to prevent possible chronic diseases and premature ageing. The

class Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) Space group R3c Unit cell a = 4.777, c = 15.67 [Å]; Z = 6 Identification Formula mass 114.95 g/mol

lattice parameters a = 4.95 Å and c = 13.58 Å at standard conditions. The unit cell contains six formula units. The lattice is analogous to that of corundum

Crystal class Prismatic (2/m) (same H-M symbol) Space group Cc (no. 9) Unit cell a = 5.29, b = 9.14 c = 10.09 [Å]; β = 100.83° Identification Color Gray-brown

Lithium azide   Li+       N−3 Lithium azide unit cell Names IUPAC name lithium azide Identifiers CAS Number 19597-69-4 3D model (JSmol) Interactive image

YBa2Cu3O7−x. When x = 1, the O(1) sites in the Cu(1) layer (as labelled in the unit cell) are vacant and the structure is tetragonal. The tetragonal form of YBCO

Hexagonal scalenohedral Space group P3c1 (No. 165) Unit cell 328.80 ų (Calculated from Unit Cell) Identification Formula mass 196.02 Colour Greenish-yellow

Hexagonal lattice Wallpaper group p6m Unit cell

efficiency of a transmitarray panel. Provided that the insertion loss of each unit cell is minimised, an aperture area appropriate to the feed radiation pattern

Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m) Space group P4/nmm Unit cell a = 4.11 Å, c = 7.23 Å; Z = 2 Identification Colour Colourless to yellow

Niobium(IV) fluoride Unit cell of niobium(IV) fluoride. Names IUPAC name Niobium(IV) fluoride Other names Niobium tetrafluoride Identifiers CAS Number

density is periodic and invariant with respect to discrete translations by unit cell vectors. In very few materials, this symmetry can be broken due to enhanced

a distance that is mathematically commensurate with the length of the unit cell. Commensurability (economics), whether economic value can always be measured

Crystal class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pbnm Unit cell a = 7.47 Å, b = 7.66 Å c = 5.75 Å; Z = 4 Identification Color Colourless

Crystal class Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Fm3m Unit cell a = 4.44 Å; Z = 4 Identification Color Emerald-green, becoming black on

Technetium(VII) oxide Structural formula of technetium(VII) oxide. Unit cell of technetium(VII) oxide. Names IUPAC name Technetium(VII) oxide Other names

Tin(IV) fluoride Unit cell of tin(IV) fluoride Names IUPAC name tin(IV) fluoride Other names stannic fluoride, tin tetrafluoride Identifiers CAS Number

The unit cell of rutile, an important oxide of titanium. Ti(IV) centers are grey; oxygen centers are red. Notice that oxygen forms three bonds to titanium

lattice parameters a = 739 pm and c = 421 pm with two formula units per unit cell and thus a calculated density of 4.19 g·cm−3. When PmCl3 is heated in

name chem mw crystal system space group unit cell volume density comments references Zn8Se2[BO2]12 I43m a=7.6749 b=7.6749 c=7.6749 band gap 4.42 eV SHG

Thallium(I) sulfide Unit cell of thallium sulfide. Names IUPAC name Thallium(I) sulfide Other names thallous sulfide, thallous sulphide Identifiers CAS

{\displaystyle a} of stoichiometric iron pyrite FeS2 amounts to 541.87 pm. The unit cell is composed of a Fe face-centered cubic sublattice into which the S 2

Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m) Space group P42/mnm Unit cell a = 4.7382(4) Å, c = 3.1871(1) Å; Z = 2 Identification Color Black, brownish

database Basis (crystal structure), the positions of the atoms inside the unit cell Basis set (chemistry) Dry basis, an expression of a calculation in which

Triclinic Crystal class Pinacoidal (1) (same H-M symbol) Space group P1 Unit cell a = 7.99 Å, b = 7.03 Å, c = 7.03 Å; α = 90.51°, β = 95.21°, γ = 102.53°;

= 0.497 nm, b = 0.596 nm, c = 0.544 nm, Z = 4 (four formula units per unit cell) were in reasonable agreement with previous results obtained on synthetic

crystallizes with clear colourless crystals in the orthorhombic system. The unit cell size is a=11.191 b=22.889 c=10.579 Å. Each thorium atom is connected twice

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/n Unit cell a = 4.229 Å, b = 6.931 Å c = 7.862 Å; β = 99.61°; Z = 4 Identification

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/c Unit cell a = 15.246(4) Å, b = 11.884(2) Å, c = 13.494(3) Å; β = 116.35(1)°; Z = 48

an example of a monoclinic mineral and appears pseudo-hexagonal. I has unit cell dimensions of: a= 13.97, b= 14.26, c= 14.22 with β = 121.02°. It was first

Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Fd3m (no. 227) Unit cell a = 8.271 Å; Z = 8 Identification Color Black, red-brown, red to yellow

by heating the decahydrate at 210 °C) forms monoclinic crystals with unit cell dimensions a=9.3811 Å, b=11.638 Å, c=5.9726 Å, β=96.079°. Several yttrium

shift in the iron content leads to a corresponding variance in a and b unit cell parameters (Yakubovich et al., 2003). As an aluminosilicate/cyclosilicate

For a periodic approximant to a quasicrystal with an 82-tetrahedron unit cell, they obtained a packing density as high as 85.03%. In late 2009, a new

Brown D., Hall T.L., Moseley P.T (1973). "Structural parameters and unit cell dimensions for the tetragonal actinide tetrachlorides(Th, Pa, U, and Np)

to low cation exchange capacity. The typical chemical formula of the unit cell can be described as QxNayAl2.4Si33.6O72•zH2O (1.4 < x <27)(0.7 < y < 4

Crystal system Triclinic Crystal class Pinacoidal (1) (same H-M symbol) Unit cell a = 8.155 Å, b = 12.84 Å c = 10.16 Å; α = 93.5° β = 116.25°, γ = 89.133°;

Crystal class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pnma Unit cell a = 11.24, b = 9.90 c = 6.56 [Å]; Z = 4 Identification Formula mass 395

Cubic Crystal class Diploidal (m3) H-M symbol: (P 2/m 3) Space group Pa3 Unit cell a = 5.61 Å; Z = 4 Structure Crystal structure of Laurite   S   Ru Identification

of freedom is 3pq when p is the number of primitive cells with q atoms/unit cell. From these only 3p are associated with the acoustic modes, the remaining

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group C2/m Unit cell a = 5.25 Å, b = 9.18 Å c = 16 Å; β = 99°; Z = 2 Identification Color White

Triclinic Crystal class Pinacoidal (1) (same H-M symbol) Space group P1 Unit cell a = 8.1768, b = 12.8768 c = 14.169 [Å]; α = 93.17° β = 115.85°, γ = 92

isostructural with gold(I) chloride and has a body centered tetragonal unit cell with a = 6.734 Å, c = 8.674 Å, and space group I41/amd. The other (P-AuBr)

cell has 2+ cations occupying 2 of the 8 tetrahedral sites and 3+ cations occupying 3/2 of the 4 octahedral sites. The second type of sub unit cell has

between June and October 2022, due to the mineral's toxicity. Orpiment's unit cell Orpiment's crystal structure consists of sheets The sheets are stacked

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group C2/m Unit cell a = 5.15 Å, b = 8.91 Å c = 23.83 Å; β = 94.23°; Z = 4 Identification Color

Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Fd3m (no. 227) Unit cell a = 8.457 Å; Z = 8 Identification Color Black to brownish black Crystal

Copper indium gallium selenide CIGS unit cell. Red = Cu, yellow = Se, blue = In/Ga Identifiers CAS Number 12018-95-0(CuInSe2) ChemSpider 24774055 Y[<del

unit cell of the crystal structure of palladium(II) fluoride

Ball-and-stick model of the unit cell of Co3O4

dipyramidal (4/mmm) H–M symbol: (4/m 2/m 2>/m) Space group P42/mnm (No. 136) Unit cell a = 4.1772(7) Å, c = 2.6651(4) Å; Z = 2 Identification Color Colorless

Calcium nitride Unit cell containing 31 nitride ions (red) and 48 calcium ions (white). Each nitride is surrounded by six calcium, and each calcium by

single optical branch, such as cubic systems with two different atoms per unit cell. For systems with many phonon branches, the relation does not necessarily

Unit cell, ball and stick model of americium(III) chloride with a legend

three-fold rotation axes. This gives eight chloride and eight sulfide ions per unit cell. The mercury ions are located on two-fold rotation axes that do not intersect

Hexagonal Crystal class Pyramidal (6) (same H-M symbol) Space group P63 Unit cell a = 12.67(9) Å, c = 5.15(4) Å; Z= 1 Identification Color Grey-green, white

particular group. In 2005 Hussey proposed a re-scaling of A/γ2 to account for unit cell volume, dimensionality, carrier density and multi-band effects. In 2009

Sodium fluorosilicate Unit cell of sodium hexafluoridosilicate Names Preferred IUPAC name Sodium fluorosilicate Systematic IUPAC name Sodium hexafluoridosilicate(2–)

19.730 Å, β = 95.23°, 8 formula per unit cell, and a cell volume of V = 2195.6 Å3. The c dimension and unit cell volume are doubled due to the presence

conform to a monoclinic system of symmetry, occupying space group P21/c. A unit cell of the mineral, the smallest divisible unit that possesses the same symmetry

meeting at each vertex Cubic crystal system, a crystal system where the unit cell is in the shape of a cube Cubic function, a polynomial function of degree

name chem mw crystal system space group unit cell volume density comments references Zn4B6O12S I43m NLO 1.9 × KDP cadmium sulfur boracite Cd3B7O13S2 cubic

cells spanning two layers. γ has rhombohedral crystal system, with the unit cell including four layers. β-Indium(II) selenide can be exfoliated into two-dimensional

Crystal class Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Fm3m Unit cell a = 5.6404(1) Å; Z = 4 Identification Formula mass 58.433 g/mol Color

the scatterers in each unit cell. In the FSS case, the unit cell is 2-dimensional and in the photonic crystal case, the unit cell is 3-dimensional. The

cells spanning two layers. γ has rhombohedral crystal system, with the unit cell including four layers. β-Indium(II) selenide can be exfoliated into two-dimensional

Orthorhombic Crystal class Pyramidal (mm2) (same H-M symbol) Space group Bba2 Unit cell a = 10.41 Å, b = 13.42 Å, c = 6.92 Å; Z = 8 Identification Color Yellowish

{\displaystyle Fm{\bar {3}}m} . Rubidium sulfide has a crystal lattice unit cell dimension of = 765.0 pm. Rubidium sulfide reacts with sulfur in hydrogen

Tin(II) sulfate Unit cell of tin(II) sulfate. Names Other names Stannous sulfate Identifiers CAS Number 7488-55-3 Y 3D model (JSmol) Interactive image

Dihexagonal dipyramidal (6/mmm) H-M symbol: (6/m 2/m 2/m) Space group P6/mcc Unit cell a = 10, c = 14 [Å]; Z = 2 Identification Color Light brownish-yellow,

pattern was indexed on a monoclinic unit cell and the absences consistent with the P21/c space group were found. The unit cell was similar to the electron diffraction

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group I2/c Unit cell a = 12.11 Å, b = 10.42 Å, c = 6.78 Å; β = 100.8°; Z = 8 Identification

name formula system space group unit cell volume Å3 density optical ref Brianyoungite Zn12(CO3)3(SO4)(OH)16 Monoclinic P21/m a = 15.724 b = 6.256 c =

Unit cell ball and stick model of arsenic triiodide

Rubidium nitrate Unit cell of rubidium nitrate Names IUPAC name Rubidium nitrate Identifiers CAS Number 13126-12-0 Y 3D model (JSmol) Interactive image

polyanions (such as sulfate) and distorted metal ion-oxygen octahedra. The unit cell contains four formula units. In the cubic form the tetrahedral anions

with unit cell dimensions: a = 4.505 Å, b = 5.333 Å, c = 6.405 Å; β= 106.24°; Z = 2. If the present a and c axes are interchanged, the unit cell of scotlandite

right-handed CoSi crystals (3 presentations, with different numbers of atoms per unit cell) Names IUPAC name Cobalt silicide Identifiers 3D model (JSmol) Interactive

orthorhombic with a = 6.163 Å, b = 8.115 Å, c = 5.234 Å, and 4 molecules per unit cell. The density is 4.55 g/cm3. XeO3 should be handled with great caution

Crystal class Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Pm3m Unit cell a = 3.859 Å; Z = 1 Identification Formula mass 53.49 g/mol Color Colorless

As coordination unit cell cell packing

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/n Unit cell a = 10.3861(6) Å b = 8.1108(7) Å c = 6.663(7) Å β = 92.639(12)°; Z = 2

class Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) Space group P3m1 Unit cell a = 3.589 Å, c = 4.911 Å; Z = 1 Identification Color Colorless, white

Unit cell of Hg2F2, with F from adjacent molecules coordinating the Hg atoms

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/a Unit cell a = 12.36 Å, b = 13.27 Å c = 9.94 Å; β = 108.23°; Z = 16 Identification

Crystal class Prismatic (2/m) (same H-M symbol) Space group I2/a (no. 15) Unit cell a = 11.97 Å, b = 6.52 Å c = 10.09 Å; β = 105.62°; Z = 8 Identification

Ditrigonal pyramidal (3m) Space group 2H polytype: P63/mmc 3R polytype: R3m Unit cell 2H polytype: a = 3.16 Å, c = 12.3 Å; Z = 2 3R polytype: a = 3.16 Å, c

Crystal class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pmnb Unit cell a = 6.0285(6) Å, b = 10.3586(9) Å, c = 4.7031(3) Å, Z = 4 Identification

transition temperature in alkaline-metal-doped fullerene increases with the unit-cell volume V. As Cs+ is the largest alkali ion, caesium-doped fullerene is

Monoclinic Crystal class Prismatic (2/m) (same H–M symbol) Space group P21/a Unit cell a = 7.057 Å, b = 8.707 Å c = 6.555 Å; β = 113.81°; Z = 4 Identification

with the 1T unit cell containing only one layer, the unit cell has a c parameter slightly less than half the length of that of the 2H unit cell (5.95 Å and

crystals, space group Fm3m, cell parameters a = 0.5533 nm, with formulas per unit cell Z = 4. It is stable in air, does not dissolve in water and reacts actively

Crystal class Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Ia3d Unit cell a = 11.819 Å; Z = 8 Identification Color brownish red to brownish yellow

Unit cell, ball and stick model of plutonium(III) fluoride

Caesium acetate Structural formula Unit cell of anhydrous caesium acetate. Names Preferred IUPAC name Caesium acetate Other names Cesium acetate Identifiers

Hextetrahedral (43m) H–M symbol: (43m) Space group F 4 3 m (No. 216) Unit cell a = 8.0898(9) Å; Z = 8 Identification Color Various; red, pink, blue,

lattice itself. In the 5 cases of rotational symmetry of order 3 or 6, the unit cell consists of two equilateral triangles (hexagonal lattice, itself p6m)

Crystal class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pcab Unit cell a = 8.937 Å, b = 10.278 Å c = 9.996 Å; Z = 8 Identification Color Green

STL unit cell of the first Scherk surface

crystal have a structure that involves repetition of a basic unit called a unit cell. The atoms can be modeled as points on a lattice, and one can explore

conducted using a pseudo-hexagonal crystal of dickite to determine the unit cell information and the layers that exist within dickite. It was found that

Mg)19(As3+O3)2(Si,As5+O4)6(OH)18Cl6. The mineral characterizes in a large c unit cell parameter. It was found in Långban, Sweden - a home for many rare and

tungsten and carbon a regular trigonal prismatic, 6 coordination. From the unit cell dimensions the following bond lengths can be determined: The distance

complicated by the presence of partial occupancies and vacancies. The idealized unit cell, B105 has been shown to be electron-deficient and hence metallic according

Ditetragonal dipyramidal Space group P42/mmc (No. 131) Unit cell 73.57 ų (Calculated from Unit Cell) Identification Colour Steel gray Twinning Occasional

reduced with dioxane. Rhenium trioxide crystallizes with a primitive cubic unit cell, with a lattice parameter of 3.742 Å (374.2 pm). The structure of ReO3

Crystal class Ditrigonal pyramidal (3m) (same H-M symbol) Space group R3m Unit cell a = 9.607 Å, c = 3.143 Å; Z = 9 Identification Colour Pale brass-yellow

Crystal class Disphenoidal (222) H-M symbol: (2 2 2) Space group P2₁2₁2₁ Unit cell a = 11.86, b = 11.99 c = 6.858 [Å]; Z = 4 Identification Color White,

formula system space group unit cell Å volume density comment ref Ge38Sb8I8 cubic Pm3n a=10.8892 clathrate; band gap 1.16 eV; thermal conductivity 7 mWcm−1K−1

that space group. The parameters of the unit cell are a=10.25 Å and c=7.64 Å. One barium atom in the unit cell is enclosed by nine oxygen atoms with a

system Isometric Crystal class Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Unit cell a = 5.02 Å, Z = 4 Identification Color Black, reddish brown Crystal habit

Mg)19(As3+O3)2(Si,As5+O4)6(OH)18Cl6. The mineral characterizes in a large c unit cell parameter. It was found in Långban, Sweden - a home for many rare and

Crystal structure of tobermorite: elementary unit cell.

lattice parameters a = 742 pm and c = 2055 pm and six formula units per unit cell. Its crystal structure is isotypic with bismuth(III) iodide. Haynes, William

Crystal class 1A polytype: pinacoidal (1) 2M polytype: prismatic (2/m) Unit cell 1A polytype: a = 9.46 Å, b = 5.50 Å, c = 9.15 Å; α = 97.05°, β = 101.56°

formula system space group unit cell Å volume density comment ref Ca3AsCl3 Pm3m a= 5.760 Sr2AsCl dark violet Cd8As7Cl cubic P23 a=7.266, Z=1 Hg7.4As4Cl6

trapezohedral class 3 2; β-quartz: hexagonal 622 Space group Trigonal 32 Unit cell a = 4.9133 Å, c = 5.4053 Å; Z=3 Identification Colour Brown to grey, opaque

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group C2/c Unit cell a = 4.6837(5) Å b = 3.4226(5) Å c = 5.1288(6) Å; β = 99.47°; Z = 4 Identification

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group C2/m Unit cell a = 7.86 Å, b = 16.6 Å c = 5.65 Å; β = 90.45°; Z = 2 Identification Color

Crystal class Prismatic (2/m) (same H-M symbol) Space group C2/m (no. 12) Unit cell a = 9.84 Å, b = 18.02 Å c = 5.27 Å; β = 104.95°; Z = 2 Identification

Roughly speaking, the CBr4 are situated on the corners of the cubic unit cell as well as on the centers of its faces in an fcc arrangement. It was thought

hydride. Neodymium hydride is a blue crystal of the hexagonal system, with unit cell parameters a=0.385 nm, c=0.688 nm. It reacts with water to form neodymium

shown that covellite nanoplatelets of approx. two nm thick, with one unit cell and two copper atoms layers, and diameters around 100 nm are ideal dimensions

Crystal class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Ccmb Unit cell a = 12.23 Å, b = 15.29 Å c = 8.66 Å, Z = 4 Identification Color Yellow

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group C2/c Unit cell a = 9.746 Å, b = 8.899 Å c = 5.251 Å; β = 105.79°; Z = 4 Identification

Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pnma (no. 62) Unit cell a = 4.88(2) Å, b = 10.61(2) Å c = 6.24(2) Å; Z = 4 Identification Color

monoclinic crystal structure, its structure is P21/n. Dimensions of the unit cell are: a = 1440 pm, b = 462.2 pm, c = 1436 pm and β = 118.0°. Its crystals

Crystal class Scalenohedral (42m) H-M symbol: (4 2m) Space group I42m Unit cell a = 5.4432, c = 10.7299 [Å]; Z = 2 Identification Color Steel-gray to

(orthorhombic with a very close to b, or tetragonal with a equal to b). Unit Cell Parameters: a = b = 13.21 Å, c = 6.622 Å, Z = 2 Space Group: I42d Crystals

Ball-and-stick model of the unit cell of the crystal structure of hafnium(III) iodide

parameters: a = 5.94 μm, b = 8.00 μm, c = 8.92 μm, β = 126°32′ 2 formulas per unit cell,[clarification needed] density = 1.958 g/cm3 Trimethylsulfonium tetrafluoroborate

electrons in charge-transfer insulators move between atoms within the unit cell. In the Mott–Hubbard case, it's easier for electrons to transfer between

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P2/c Unit cell a = 4.77 Å, b = 5.73 Å c = 4.98 Å; β = 90.2°; Z = 2 Identification Color

Crystal system Isometric Space group Fm3m (No. 225) Unit cell 178.26 ų (Calculated from Unit Cell) Identification Formula mass 174.90 gm Colour Lemon

parameters a = 7.0267(4) Å und c = 20.807(2) Å and 2 formula units per unit cell. In a study in 2003, using fresh, synthetic crystals, Locock and Burns

Dihexagonal Dipyramidal Space group P63/mmc (No. 194) Unit cell 120.94 ų (Calculated from Unit Cell) Identification Formula mass 230.41 gm Colour Grayish-black

Unit cell of CaF2, known as fluorite structure, from two equivalent perspectives. The second origin is often used when visualising point defects centred

class Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) Space group R3m Unit cell a = 14.31, c = 30.15 [Å]; Z = 12 Identification Color Red, magenta, brown;

which shows an a:b:c ratio of 0.737:1:1.356. The unit cell volume is 887.53 Å3 (Calculated from Unit Cell). Metarauchite crystals show characteristic multiply

CdIn2S4 exhibits the spinel structure, which can be described by a cubic unit cell with 8 tetrahedrally coordinated and 16 tetrahedrally coordinated cation

ReSe2 flake, scale bar 1 µm. g: top view of the ReSe2 atomic lattice Unit cell of rhenium diselenide. Names IUPAC name Bis(selanylidene)rhenium Other

symbol Arg (not to be confused with arginine) Crystal system Orthorhombic Unit cell l a = 4.9598(5) Å, b = 7.9641(9) Å, and c = 5.7379(6) Å at 25 °C Identification

structure, the space group is F m 3 ¯ m {\displaystyle Fm{\bar {3}}m} , each unit cell has 4 units. Lithium Selenide can be synthesized via the reaction between

chem mw crystal system space group unit cell Å volume density comment references boroseleniteselenate B2Se3O10 monoclinic P21/c a = 4.3466, b = 7.0237

Tetragonal Crystal class Dipyramidal (4/m) H-M symbol: (4/m) Space group I4/m Unit cell a = 9.956 Å, b = 2.8705 Å, c = 9.706 Å; β = 90.95°; Z = 1 Identification

spills. Silver nitride Marr H.E. III.; Stanford R.H. Jr. (1962). "The unit-cell dimensions of silver azide". Acta Crystallographica. 15 (12): 1313–1314

Crystal class Hextetrahedral (43m) H-M symbol: (4 3m) Space group P43n Unit cell a = 9.09 Å; Z = 2 Identification Color Deep blue, azure, violet-blue,

Unit cell of potassium superoxide

class Dipyramidal (mmm) H–M symbol: (⁠2/m⁠ ⁠2/m⁠ ⁠2/m⁠) Space group Amma Unit cell a = 6.245(1) Å, b = 6.995(2) Å c = 6.993(2) Å; Z = 4 Identification Color

Unit cell of the crystal structure

nepheline. The structure is monoclinic with space group P21/b (a-unique). The unit cell has a = 4.7488 Å; b = 10.2875 Å; c = 13.6967 Å; and alpha = 100.63°; V

squawcreekite. FeSbO4 exhibits the rutile structure, with a tetragonal unit cell. The cations are octahedrally coordinated to oxygen anions, with the octahedra

4682 nm, b = 0.5178 nm, c = 0.8312 nm, Z = 4 (four structure units per unit cell). Its crystal structure is characterized by strong polymeric chains composed

nepheline. The structure is monoclinic with space group P21/b (a-unique). The unit cell has a = 4.7488 Å; b = 10.2875 Å; c = 13.6967 Å; and alpha = 100.63°; V

Cubic Crystal class Diploidal (m3) H-M symbol: (2/m 3) Space group Ia3 Unit cell a = 9.411 Å; Z = 16 Identification Formula mass 158.33 g/mol Color Black

Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m) Space group I41/amd Unit cell a = 5.76 Å c = 9.46 Å; Z = 4 Identification Formula mass 228.81 g/mol

orthorhombic with space group Pbcn, and with unit cell dimensions a=10.66 b=12.74 c=7.47 Å, and unit cell volume 1014 Å3. The density is 3.884. It contains

Triclinic Crystal class Pinacoidal (1) (same H–M symbol) Space group C1 Unit cell a = 8.28, b = 12.97 c = 7.15 [Å]; α = 91.05° β = 116.26°, γ = 90.15°;

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/c Unit cell a = 5.3 Å, b = 5.278 Å, c = 5.307 Å; β = 114.36°; Z = 4 Identification

Zirconium nitride in the unit cell

Trigonal Crystal class Rhombohedral (3) H–M symbol: (3) Space group R3 Unit cell a = 4.8012(1), c = 16.002 [Å]; Z = 3 Identification Color White, grey

Oblique lattice Wallpaper group p2 Unit cell

Crystal class Dipyrimidal Space group P63 (No. 173) Unit cell 545.39 Å3 (calculated from unit cell) Identification Formula mass 671.38 Colour Light to

Crystal class Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Ia3d Unit cell a = 11.63 Å; Z = 8 Identification Color Yellow through red Crystal habit

potentials. It can be extended to treat crystals with any number of atoms in a unit cell. There are versions of the theory that can be used to calculate surface

Unit cell

Triclinic Crystal class Pinacoidal (1) (same H-M symbol) Space group P1 Unit cell a = 7.94 Å, b = 10.69 Å c = 6.77 Å; α = 80.97° β = 84.2°, γ = 81.85°;

Dihexagonal dipyramidal (6/mmm) H-M symbol: (6/m 2/m 2/m) Space group P6/mmm Unit cell a = 8.948 Å, c = 14.078 Å; Z = 168 Identification Colour Black Crystal

Crystal class Dipyramidal (mmm) H–M Symbol: (2/m 2/m 2/m) Space group Pbnm Unit cell a = 10.24, b = 20.72 c = 4.73 [Å]; Z = 4 Identification Color White, yellow

other mineral known. Most of the values could be measured on a triclinic unit cell but the d values of the actual data and calculated data varied by a lot

Trigonal Crystal class Rhombohedral (3) H–M symbol: (3) Space group R3 Unit cell a = 4.8312(2) c = 16.1663(3) [Å]; Z = 3 Identification Color Brown, yellow

featuring both Fe2+ and Fe3+ centers, in 1:2 ratio. The crystallographic unit cell is cubic, with space group Fd3m. The S anions form a cubic close-packed

name chem mw crystal system space group unit cell Å volume density comment references Cr3B7O13I F4_3c a = 12.171 Z=8 18029 4.17 Mn3B7O13I F4_3c a = 12

name formula system space group unit cell Å volume density properties ref Sb2Te2BrAlCl4 monoclinic C2/c copper telluride bromide CuBrTe tetragonal I41/amd

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/a Unit cell a = 10.47 Å, b = 8.41 Å, c = 6.91 Å; β = 103.83°; Z = 2 Identification

Crystal class Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Fd3m Unit cell a = 9.966 Å; Z = 8 Identification Color Black Crystal habit Massive, platy

Crystal class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pnma Unit cell a = 8.359 Å, b = 5.352 Å, c = 6.866 Å; Z = 4 Identification Color White

Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) Space group Fd3m (No. 227) Unit cell a = 10.41(6) Å, Z = 8 Identification Color Black to brown, chocolate-brown

the unit cell parameter remains constant along the isochore and the QHA is valid. But when the thermal pressure is anisotropic, the unit cell parameter

Tripotassium phosphate Unit cell of tripotassium phosphate. Names IUPAC name Potassium phosphate Systematic IUPAC name Potassium tetraoxidophosphate(3−)

suspended in water. Bismuth subcarbonate has a structure with a tetragonal unit cell. Layers of (BiO)n positively charged, and carbonate anion (CO2− 3) are

class Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) Space group R3m Unit cell a = 6.19, c = 46.47 [Å]; Z = 3 Identification Colour Lilac to rose-pink

Crystal class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pbnm Unit cell a = 11.229 Å, b = 11.31 Å, c = 3.8389 Å; Z = 4 Identification Color Lead-gray

the crystal and slightly modifies the interatomic distances and angles. Unit cell of tetragonal Pb3O4 (Key:   Pb   O) Part of tetragonal red lead's crystal

lattice parameters, a = 1.169 nm, c = 2.225 nm and three formula units per unit cell, but later reassigned a face-centered cubic structure (fluorite-like)

Crystal class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pcmn Unit cell a = 9.621 Å b = 17.363 Å, c = 6.994 Å; Z = 4 Identification Color Green

Visualisation of a diamond cubic unit cell: 1. Components of a unit cell, 2. One unit cell, 3. A lattice of 3×3×3 unit cells

Van der Waals terms. It can be used for structure optimization, both unit cell dimensions and internal atomic positions. For the latter an adaptive fixed-point

Triclinic Crystal class Pinacoidal (1) (same H–M symbol) Space group P1 Unit cell a = 9.758 Å, b = 10.499 Å, c = 12.205 Å; α = 108.58°, β = 102.92°, γ =

Triclinic Crystal class Pinacoidal (1) (same H-M symbol) Space group P1 Unit cell a = 21.72 Å, b = 21.72 Å c = 17.4 Å; α = 124.14° β = 95.86°, γ = 120°;

per unit cell, A and B, which correspond to a single electron per unit cell. In this configuration each electron can either hop inside the unit cell or

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/c Unit cell a = 5.744, b = 5.675 c = 5.785 [Å]; β = 112.3°; Z = 4 Identification Colour

Unit cell ball and stick model of lithium nitride

Orthorhombic Crystal class Pyramidal (mm2) (same H-M symbol) Space group Pc21b Unit cell a = 5.582 Å, b = 5.582 Å, c = 5.582 Å; Z = 4 Identification Color Reddish

Hans P.; Prostka, Harold J.; Appleman, Daniel E. (14 September 1962). "Unit-Cell Dimensions of Natural and Synthetic Scapolites". Science. 137 (3533):

Orthorhombic Crystal class Pyramidal (mm2) (same H-M symbol) Space group Pc21b Unit cell a = 5.582 Å, b = 5.582 Å, c = 5.582 Å; Z = 4 Identification Color Reddish

Journal of Mineralogy,17, 915-932. Fisher, J. D. (1956) Hagendorfite Unit Cell. Geological Society of America Bulletin, 67, 1694-1695. Fransolet, A.

symbol Asp Crystal system Monoclinic Crystal class 2/m Space group C2/m Unit cell a = 5.291(8), b = 9.16(2), c = 10.12(2) Å Identification Fracture Micaceous

and developed concepts in solid-state physics such as the Wigner–Seitz unit cell used in the study of crystalline material in solid-state physics. After

Crystal structure of lithium iodate, iodines are inside the unit cell

with space group Ccmm. Unit cell dimensions are a=6.630 Å b=11.004 Å c=11.090 Å. There are four formula per unit cell. Unit cell volume is 809.1 Å3. The

formula system space group unit cell Å volume density comment ref Li10.68Si5P orthorhombic Pnma a = 10.2434, b = 4.2788, c = 23.9767 Z=4 1050.89 1.52

name formula crystal system space group unit cell density Optics refractive index Raman spectrum comments reference Alexkhomyakovite K6(Ca2Na)(CO3)5Cl∙6H2O

momentum space. Tantalum arsenide crystallizes in a body-centered tetragonal unit cell with lattice parameters a = 3.44 Å and c = 11.65 Å. It belongs to the

Dihexagonal dipyramidal (6/mmm) H-M symbol: (6/m 2/m 2/m) Space group P63/mcm Unit cell a = 6.759(5) c = 4.720(5) [Å]; Z = 2 Identification Color Gray, steel-black

of symmetry or mirror planes. The space group is either P1 or P1. The unit cell parameters are: a = 13.637 Å, b = 14.507 Å, c = 13.620 Å, α = 107.16°

of about f e x ∼ 10 − 4 {\displaystyle f_{\rm {ex}}\sim 10^{-4}} per unit cell. Shallow impurity-exciton states are working as antennas borrowing their

Universities. 22 (6): 679. doi:10.1016/S1005-9040(06)60189-X. Barnes, W. H. "The unit cell and space group of lindgrenite" (PDF). {{cite journal}}: Cite journal

diffraction pattern of Lahnsteinite is readily indexed in a triclinic unit cell with the unit-cell dimensions refined by the least squares method a = 8.35(3), b

Barium iodate Unit cell Identifiers CAS Number 10567-69-8 Y 3D model (JSmol) Interactive image ChemSpider 145385 ECHA InfoCard 100.031.035 PubChem CID

with a diameter of114.6 mm and a Gandolfi attachment. Refinement of the unit-cell parameters gave the following values: a = 5.321(7) Å , b = 9.360(10) Å

Triclinic Crystal class Pinacoidal (1) (same H-M symbol) Space group P1 Unit cell a = 7.99 Å, b = 7.03 Å, c = 7.03 Å; α = 90.51°, β = 95.21°, γ = 102.53°;

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/m Unit cell a = 13.82, b = 6.419 c = 5.29 [Å] β = 101.04°; Z = 2 Identification Color

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group C2/c Unit cell a = 5.199 Å, b = 9.027 Å, c = 20.106 Å, β = 95.78°; Z = 4 Identification

classification 8.BL.10 Dana classification 42.07.03.01 Crystal system Trigonal Unit cell a = 7.005, c = 16.192, Z = 3; V = 688.09 Identification Formula mass 414

along the a axis. Oxygen is shown in red, silicon in pink, and magnesium/iron in blue. A projection of the unit cell is shown by the black rectangle.

Dihexagonal dipyramidal (6/mmm) H-M symbol: (6/m 2/m 2/m) Space group P63/mmc Unit cell a = 5.926, c = 23.32 [Å]; Z = 2 Identification Color Gray Crystal habit

by neutron diffraction at 77 K and 293 K. Ball-and-stick model of the unit cell of uranium hexafluoride Bond lengths and angles of gaseous uranium hexafluoride

Crystal class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pnma Unit cell a = 6.03, b = 9.12 c = 6.865 [Å]; Z = 4 Identification Color Bright green

Crystal class Hextetrahedral (43m) H-M symbol: (4 3m) Space group I43m Unit cell a = 10.39(16) Å; Z = 2 Identification Color Steel gray to iron-gray Crystal

distances. In the Mn compound, however, is distorted (and hence a monoclinic unit cell vs. a higher symmetry one) due to the Jahn-Teller effect, with pairs of

Lithium perchlorate __ Li+     __ Cl7+     __ O2− Unit cell of lithium perchlorate. Names IUPAC name Lithium perchlorate Other names Perchloric acid,

Triclinic Crystal class Pinacoidal (1) (same H-M symbol) Space group P1 Unit cell a = 7.1262(12) Å b = 7.852(10) Å c = 5.5724(10) Å α = 89.99(2)°, β = 101

class Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) Space group R3m Unit cell a = 7.32 Å, c = 17.02 Å; Z = 3 Identification Color black, dark green

pegmatites found in Maine occurred as rhombohedral crystals with a hexagonal unit cell and were pseudocubic with a maximum size of around 0.9 mm. This is important

natrite, schcherbakovite, sodalite, villiaumite, and rasvumite. The c unit cell parameter in rastsvetaevite is doubled. Warr, L.N. (2021). "IMA–CNMNC

class Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) Space group R3c Unit cell a = 4.6526(7) c = 15.0257(22) [Å]; Z = 6 Identification Color White, grey

group Fm3m, cell parameters a = 0.6025 nm, with number of formulas per unit cell Z = 4. The crystals are very unstable and decompose in the open air. Lanthanum

encountered is monoclinic H-Nb2O5, which has a complex structure with a unit cell containing 28 niobium atoms and 70 oxygen, where 27 of the niobium atoms

Orthorhombic Crystal class Pyramidal (mm2) H-M symbol: (mm2) Space group Pmn21 Unit cell a = 7.407(1), b = 6.436(1) c = 6.154(1) [Å]; Z = 2 Identification Color

prismatic sites. NiS has two polymorphs. The α-phase has a hexagonal unit cell, while the β-phase has a rhombohedral cell. The α-phase is stable at temperatures

Crystal class Prismatic (2/m) or pinacoidal (1) Space group C2/c or C1 Unit cell a = 5.16 Å, b = 8.966(3) Å, c = 9.347(6) Å; α = 91.18°, β = 100.46°, γ

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P21/c Unit cell a = 8.13, b = 4.48 c = 8.09 [Å]; β = 112.9°; Z = 4 Identification Color

diverse organisms have unique structural properties, including symmetry and unit cell dimensions, due to fundamental differences in their constituent building

and P21/a space group. Its unit cell consists of three unequal axes lengths with angles α = γ = 90°; β = 97.78°. The unit cell dimensions were measured

Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Space group P2/a Unit cell a = 11.737 Å, b = 5.171 Å, c = 7.63 Å; β = 112.54°; Z = 2 Identification