Rb2V2O5 crystallizes in the orthorhombic Ima2 space group. Rb(1) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second V site, V(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form corner-sharing VO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent Rb(1) and one V(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to three equivalent Rb(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Rb(1) and two equivalent V(2) atoms.
Rb2V2O5 crystallizes in the orthorhombic Ima2 space group. Rb(1) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(2), and four equivalent O(1) atoms. There is one shorter (2.90 Å) and one longer (3.17 Å) Rb(1)-O(3) bond length. There are a spread of Rb(1)-O(2) bond distances ranging from 2.91-3.25 Å. There are a spread of Rb(1)-O(1) bond distances ranging from 2.80-2.99 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Both V(1)-O(1) bond lengths are 1.74 Å. Both V(1)-O(2) bond lengths are 2.09 Å. In the second V site, V(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form corner-sharing VO4 tetrahedra. Both V(2)-O(2) bond lengths are 1.78 Å. There is one shorter (1.87 Å) and one longer (1.89 Å) V(2)-O(3) bond length. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent Rb(1) and one V(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to three equivalent Rb(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Rb(1) and two equivalent V(2) atoms.