SrCaCrBiO6 crystallizes in the tetragonal P-4n2 space group. Sr(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Ca(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-31°. Bi(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form BiO6 octahedra that share corners with six equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-31°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Ca(1), one Cr(1), and one Bi(1) atom to form a mixture of distorted corner and edge-sharing OSr2Ca2CrBi octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Cr(1), and one Bi(1) atom.
SrCaCrBiO6 crystallizes in the tetragonal P-4n2 space group. Sr(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. All Sr(1)-O(1) bond lengths are 2.82 Å. All Sr(1)-O(2) bond lengths are 2.61 Å. Ca(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. All Ca(1)-O(1) bond lengths are 2.82 Å. All Ca(1)-O(2) bond lengths are 2.46 Å. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-31°. Both Cr(1)-O(1) bond lengths are 2.04 Å. All Cr(1)-O(2) bond lengths are 2.02 Å. Bi(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form BiO6 octahedra that share corners with six equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-31°. Both Bi(1)-O(1) bond lengths are 2.13 Å. All Bi(1)-O(2) bond lengths are 2.13 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Ca(1), one Cr(1), and one Bi(1) atom to form a mixture of distorted corner and edge-sharing OSr2Ca2CrBi octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Cr(1), and one Bi(1) atom.