SiS2 Structure: A2B_oI12_72_j_a
| Prototype | : | SiS2 |
| AFLOW prototype label | : | A2B_oI12_72_j_a |
| Strukturbericht designation | : | $C42$ |
| Pearson symbol | : | oI12 |
| Space group number | : | 72 |
| Space group symbol | : | $\mbox{Ibam}$ |
| AFLOW prototype command | : | aflow --proto=A2B_oI12_72_j_a --params=$a,b/a,c/a,x_{2},y_{2}$ |
Other compounds with this structure
- SeS2
Body-centered Orthorhombic primitive vectors:
\[
\begin{array}{ccc}
\mathbf{a}_1 & = & - \frac12 \, a \, \mathbf{\hat{x}} + \frac12 \, b \, \mathbf{\hat{y}} + \frac12 \, c \, \mathbf{\hat{z}} \\
\mathbf{a}_2 & = & ~ \frac12 \, a \, \mathbf{\hat{x}} - \frac12 \, b \, \mathbf{\hat{y}} + \frac12 \, c \, \mathbf{\hat{z}} \\
\mathbf{a}_3 & = & ~ \frac12 \, a \, \mathbf{\hat{x}} + \frac12 \, b \, \mathbf{\hat{y}} - \frac12 \, c \, \mathbf{\hat{z}} \\
\end{array}
\]
Basis vectors:
\[ \begin{array}{ccccccc} & & \mbox{Lattice Coordinates} & & \mbox{Cartesian Coordinates} &\mbox{Wyckoff Position} & \mbox{Atom Type} \\ \mathbf{B}_{1} & =& \frac14 \, \mathbf{a}_{1} + \frac14 \, \mathbf{a}_{2}& =& \frac14 \, c \, \mathbf{\hat{z}}& \left(4a\right) & \mbox{Si} \\ \mathbf{B}_{2} & =& \frac34 \, \mathbf{a}_{1} + \frac34 \, \mathbf{a}_{2}& =& \frac34 \, c \, \mathbf{\hat{z}}& \left(4a\right) & \mbox{Si} \\ \mathbf{B}_{3} & =&y_{2} \, \mathbf{a}_{1}+ x_{2} \, \mathbf{a}_{2}+ \left(x_{2} + y_{2}\right) \, \mathbf{a}_{3}& =&x_{2} \, a \, \mathbf{\hat{x}}+ y_{2} \, b \, \mathbf{\hat{y}}& \left(8j\right) & \mbox{S} \\ \mathbf{B}_{4} & =&- y_{2} \, \mathbf{a}_{1}- x_{2} \, \mathbf{a}_{2}- \left(x_{2} + y_{2}\right) \, \mathbf{a}_{3}& =&- x_{2} \, a \, \mathbf{\hat{x}}- y_{2} \, b \, \mathbf{\hat{y}}& \left(8j\right) & \mbox{S} \\ \mathbf{B}_{5} & =&\left(\frac12 + y_{2}\right) \, \mathbf{a}_{1}+ \left(\frac12 - x_{2}\right) \, \mathbf{a}_{2}+ \left( - x_{2} + y_{2}\right) \, \mathbf{a}_{3}& =&- x_{2} \, a \, \mathbf{\hat{x}}y_{2} \, b \, \mathbf{\hat{y}}+ \frac12 \, c \, \mathbf{\hat{z}}& \left(8j\right) & \mbox{S} \\ \mathbf{B}_{6} & =&\left(\frac12 - y_{2}\right) \, \mathbf{a}_{1}+ \left(\frac12 + x_{2}\right) \, \mathbf{a}_{2}+ \left(x_{2} - y_{2}\right) \, \mathbf{a}_{3}& =&x_{2} \, a \, \mathbf{\hat{x}}- y_{2} \, b \, \mathbf{\hat{y}}+ \frac12 \, c \, \mathbf{\hat{z}}& \left(8j\right) & \mbox{S} \\ \end{array} \]References
- J. Peters and B. Krebs, Silicon disulphide and silicon diselenide: a reinvestigation, Acta Crystallographic B 38, 1270–1272 (1982), doi:10.1107/S0567740882005469.