Rb2SrV4O12 crystallizes in the tetragonal P4/nbm space group. Rb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted RbO6 octahedra that share corners with eight equivalent V(1)O4 tetrahedra. Sr(1) is bonded in a body-centered cubic geometry to eight equivalent O(2) atoms. V(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form VO4 tetrahedra that share corners with four equivalent Rb(1)O6 octahedra and corners with two equivalent V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 66-76°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent V(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), one Sr(1), and one V(1) atom.
Rb2SrV4O12 crystallizes in the tetragonal P4/nbm space group. Rb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted RbO6 octahedra that share corners with eight equivalent V(1)O4 tetrahedra. Both Rb(1)-O(1) bond lengths are 3.13 Å. All Rb(1)-O(2) bond lengths are 2.99 Å. Sr(1) is bonded in a body-centered cubic geometry to eight equivalent O(2) atoms. All Sr(1)-O(2) bond lengths are 2.64 Å. V(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form VO4 tetrahedra that share corners with four equivalent Rb(1)O6 octahedra and corners with two equivalent V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 66-76°. Both V(1)-O(1) bond lengths are 1.82 Å. Both V(1)-O(2) bond lengths are 1.68 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent V(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), one Sr(1), and one V(1) atom.