Li$_{3}$N Structure: A3B_hP4_191_bc_a-001
| Prototype | Li$_{3}$N |
| AFLOW prototype label | A3B_hP4_191_bc_a-001 |
| ICSD | 95939 |
| Pearson symbol | hP4 |
| Space group number | 191 |
| Space group symbol | $P6/mmm$ |
| AFLOW prototype command |
aflow --proto=A3B_hP4_191_bc_a-001
--params=$a, \allowbreak c/a$ |
\[ \begin{array}{ccc}
\mathbf{a_{1}}&=&\frac{1}{2}a \,\mathbf{\hat{x}}- \frac{\sqrt{3}}{2}a \,\mathbf{\hat{y}}\\\mathbf{a_{2}}&=&\frac{1}{2}a \,\mathbf{\hat{x}}+\frac{\sqrt{3}}{2}a \,\mathbf{\hat{y}}\\\mathbf{a_{3}}&=&c \,\mathbf{\hat{z}}
\end{array}\]
Basis vectors
| Lattice coordinates | Cartesian coordinates | Wyckoff position | Atom type | |||
|---|---|---|---|---|---|---|
| $\mathbf{B_{1}}$ | = | $0$ | = | $0$ | (1a) | N I |
| $\mathbf{B_{2}}$ | = | $\frac{1}{2} \, \mathbf{a}_{3}$ | = | $\frac{1}{2}c \,\mathbf{\hat{z}}$ | (1b) | Li I |
| $\mathbf{B_{3}}$ | = | $\frac{1}{3} \, \mathbf{a}_{1}+\frac{2}{3} \, \mathbf{a}_{2}$ | = | $\frac{1}{2}a \,\mathbf{\hat{x}}+\frac{\sqrt{3}}{6}a \,\mathbf{\hat{y}}$ | (2c) | Li II |
| $\mathbf{B_{4}}$ | = | $\frac{2}{3} \, \mathbf{a}_{1}+\frac{1}{3} \, \mathbf{a}_{2}$ | = | $\frac{1}{2}a \,\mathbf{\hat{x}}- \frac{\sqrt{3}}{6}a \,\mathbf{\hat{y}}$ | (2c) | Li II |
References
- D. H. Gregory, P. M. O'Meara, A. G. Gordon, J. P. Hodges, S. Short, and J. D. Jorgensen, Structure of Lithium Nitride and Transition-Metal-Doped Derivatives, Li$_{3-x-y}$M$_x$N (M = Ni, Cu): A Powder Neutron Diffraction Study, Chem. Mater. 14, 2063–2070 (2002), doi:10.1021/cm010718t.
Found in
- P. Villars, K. Cenzual, J. Daams, R. Gladyshevskii, O. Shcherban, V. Dubenskyy, N. Melnichenko-Koblyuk, O. Pavlyuk, I. Savysyuk, S. Stoyko, and L. Sysa, Structure Types. Part 3: Space Groups (194)P6$_{3}$/mmc-(190)P-62c$\cdot$Li$_{3}$N (2006). Landolt-Börnstein - Group III Condensed Matter 43A6 (Springer-Verlag Berlin Heidelberg).
Prototype Generator
aflow --proto=A3B_hP4_191_bc_a --params=$a,c/a$