Sr2TaInO6 crystallizes in the tetragonal I4/m space group. Sr(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Ta(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form TaO6 octahedra that share corners with six equivalent In(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-26°. In(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form InO6 octahedra that share corners with six equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-26°. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one Ta(1), and one In(1) atom to form a mixture of distorted corner and edge-sharing OSr4TaIn octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Ta(1), and one In(1) atom.
Sr2TaInO6 crystallizes in the tetragonal I4/m 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 2.88 Å. All Sr(1)-O(2) bond lengths are 2.61 Å. Ta(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form TaO6 octahedra that share corners with six equivalent In(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-26°. Both Ta(1)-O(1) bond lengths are 2.00 Å. All Ta(1)-O(2) bond lengths are 2.00 Å. In(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form InO6 octahedra that share corners with six equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-26°. Both In(1)-O(1) bond lengths are 2.17 Å. All In(1)-O(2) bond lengths are 2.18 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one Ta(1), and one In(1) atom to form a mixture of distorted corner and edge-sharing OSr4TaIn octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Ta(1), and one In(1) atom.