In the title compounds, the cation distributions correspond to a normal garnet structure for Ca3[8]Fe2[6]Ge3[4]O12 and Ca3[8]Y2[6]Ge3[4]O12, and to an inverse garnet structure for (MgY2)[8]Mg2[6]Ge3[4]O12.
Supporting information
| Crystallographic Information File (CIF) Contains datablocks Ca3Fe2Ge3O12, Ca3Y2Ge3O12, Mg3Y2Ge3O12, global |
| Structure factor file (CIF format) Contains datablock ca3fe2ge3o12 |
| Structure factor file (CIF format) Contains datablock ca3y2ge3o12 |
| Structure factor file (CIF format) Contains datablock mg3y2ge3o12 |