SrCa2Sc6O12 crystallizes in the trigonal P-3 space group. Sr(1) is bonded in a 6-coordinate geometry to six equivalent O(2) atoms. Ca(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. Sc(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of corner and edge-sharing ScO6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1) and three equivalent Sc(1) atoms to form a mixture of distorted corner and edge-sharing OCa2Sc3 trigonal bipyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1) and three equivalent Sc(1) atoms.
SrCa2Sc6O12 crystallizes in the trigonal P-3 space group. Sr(1) is bonded in a 6-coordinate geometry to six equivalent O(2) atoms. All Sr(1)-O(2) bond lengths are 2.66 Å. Ca(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. All Ca(1)-O(1) bond lengths are 2.38 Å. Sc(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of corner and edge-sharing ScO6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. There are a spread of Sc(1)-O(1) bond distances ranging from 2.13-2.22 Å. There are a spread of Sc(1)-O(2) bond distances ranging from 2.10-2.13 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1) and three equivalent Sc(1) atoms to form a mixture of distorted corner and edge-sharing OCa2Sc3 trigonal bipyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1) and three equivalent Sc(1) atoms.