Sr2NbBiO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a q6 geometry to twelve equivalent O(1) atoms. In the second Sr site, Sr(2) is bonded in a distorted square co-planar geometry to eight equivalent O(1) atoms. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles are 27°. Bi(1) is bonded to six equivalent O(1) atoms to form BiO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 27°. O(1) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Sr(2), one Nb(1), and one Bi(1) atom.
Sr2NbBiO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a q6 geometry to twelve equivalent O(1) atoms. All Sr(1)-O(1) bond lengths are 3.00 Å. In the second Sr site, Sr(2) is bonded in a distorted square co-planar geometry to eight equivalent O(1) atoms. There are four shorter (2.51 Å) and four longer (3.12 Å) Sr(2)-O(1) bond lengths. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles are 27°. All Nb(1)-O(1) bond lengths are 2.03 Å. Bi(1) is bonded to six equivalent O(1) atoms to form BiO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 27°. All Bi(1)-O(1) bond lengths are 2.35 Å. O(1) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Sr(2), one Nb(1), and one Bi(1) atom.