Encyclopedia of Crystallographic Prototypes

AFLOW Prototype: A2B_mC6_12_i_a-001

This structure originally had the label A2B_mC6_12_i_a. Calls to that address will be redirected here.

If you are using this page, please cite:
D. Hicks, M.J. Mehl, M. Esters, C. Oses, O. Levy, G.L.W. Hart, C. Toher, and S. Curtarolo, The AFLOW Library of Crystallographic Prototypes: Part 3, Comp. Mat. Sci. 199, 110450 (2021). (doi=10.1016/j.commatsci.2021.110450)

Links to this page

https://aflow.org/p/PNDR
or https://aflow.org/p/A2B_mC6_12_i_a-001
or PDF Version

Tolbachite (CuCl$_{2}$) Structure: A2B_mC6_12_i_a-001

Picture of Structure; Click for Big Picture
Prototype Cl$_{2}$Cu
AFLOW prototype label A2B_mC6_12_i_a-001
Mineral name tolbachite
ICSD 66645
Pearson symbol mC6
Space group number 12
Space group symbol $C2/m$
AFLOW prototype command aflow --proto=A2B_mC6_12_i_a-001
--params=$a, \allowbreak b/a, \allowbreak c/a, \allowbreak \beta, \allowbreak x_{2}, \allowbreak z_{2}$

Other compounds with this structure

CuBr$_{2}$


\[ \begin{array}{ccc} \mathbf{a_{1}}&=&\frac{1}{2}a \,\mathbf{\hat{x}}- \frac{1}{2}b \,\mathbf{\hat{y}}\\\mathbf{a_{2}}&=&\frac{1}{2}a \,\mathbf{\hat{x}}+\frac{1}{2}b \,\mathbf{\hat{y}}\\\mathbf{a_{3}}&=&c \cos{\beta} \,\mathbf{\hat{x}}+c \sin{\beta} \,\mathbf{\hat{z}} \end{array}\]

Basis vectors

Lattice coordinates Cartesian coordinates Wyckoff position Atom type
$\mathbf{B_{1}}$ = $0$ = $0$ (2a) Cu I
$\mathbf{B_{2}}$ = $x_{2} \, \mathbf{a}_{1}+x_{2} \, \mathbf{a}_{2}+z_{2} \, \mathbf{a}_{3}$ = $\left(a x_{2} + c z_{2} \cos{\beta}\right) \,\mathbf{\hat{x}}+c z_{2} \sin{\beta} \,\mathbf{\hat{z}}$ (4i) Cl I
$\mathbf{B_{3}}$ = $- x_{2} \, \mathbf{a}_{1}- x_{2} \, \mathbf{a}_{2}- z_{2} \, \mathbf{a}_{3}$ = $- \left(a x_{2} + c z_{2} \cos{\beta}\right) \,\mathbf{\hat{x}}- c z_{2} \sin{\beta} \,\mathbf{\hat{z}}$ (4i) Cl I

References

  • P. C. Burns and F. C. Hawthorne, Tolbachite, CuCl$^{2+}$, the first example of Cu$_{2}$ octahedrally coordinated by Cl$^{-}$, American Mineralogist 78, 187–189 (1993).

Prototype Generator

aflow --proto=A2B_mC6_12_i_a --params=$a,b/a,c/a,\beta,x_{2},z_{2}$

Species:

Running:

Output: