Figure 1
(a) Crystal structure of the Sr2CO4 orthocarbonate at 92 GPa. (b) Viewed along the a axis, when the atoms lying on the ac mirror plane (b = and ) are clearly visible. (c) Polyhedral representation of Sr2CO4. (d) The three building blocks of Sr2CO4, namely: CO4, SrO11 and SrO9 (top to bottom). |