BiSr2LaO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to twelve equivalent O(1) atoms to form SrO12 cuboctahedra that share faces with four equivalent La(1)O6 octahedra and faces with four equivalent Bi(1)O6 octahedra. In the second Sr site, Sr(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. La(1) is bonded to six equivalent O(1) atoms to form LaO6 octahedra that share corners with six equivalent Bi(1)O6 octahedra and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 29°. Bi(1) is bonded to six equivalent O(1) atoms to form BiO6 octahedra that share corners with six equivalent La(1)O6 octahedra and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 29°. O(1) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(2), one La(1), and one Bi(1) atom.
BiSr2LaO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to twelve equivalent O(1) atoms to form SrO12 cuboctahedra that share faces with four equivalent La(1)O6 octahedra and faces with four equivalent Bi(1)O6 octahedra. All Sr(1)-O(1) bond lengths are 3.07 Å. In the second Sr site, Sr(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. All Sr(2)-O(1) bond lengths are 2.53 Å. La(1) is bonded to six equivalent O(1) atoms to form LaO6 octahedra that share corners with six equivalent Bi(1)O6 octahedra and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 29°. All La(1)-O(1) bond lengths are 2.37 Å. Bi(1) is bonded to six equivalent O(1) atoms to form BiO6 octahedra that share corners with six equivalent La(1)O6 octahedra and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 29°. All Bi(1)-O(1) bond lengths are 2.14 Å. O(1) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(2), one La(1), and one Bi(1) atom.