Y2V2O7 crystallizes in the cubic Fd-3m space group. Y(1) is bonded in a distorted hexagonal planar geometry to six equivalent O(1) atoms. V(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1) and two equivalent V(1) atoms to form OY2V2 tetrahedra that share corners with two equivalent O(2)V4 tetrahedra, corners with twelve equivalent O(1)Y2V2 tetrahedra,  an edgeedge with one O(2)V4 tetrahedra, and edges with four equivalent O(1)Y2V2 tetrahedra. In the second O site, O(2) is bonded to four equivalent V(1) atoms to form OV4 tetrahedra that share corners with four equivalent O(2)V4 tetrahedra, corners with twelve equivalent O(1)Y2V2 tetrahedra, and edges with six equivalent O(1)Y2V2 tetrahedra.
Y2V2O7 crystallizes in the cubic Fd-3m space group. Y(1) is bonded in a distorted hexagonal planar geometry to six equivalent O(1) atoms. All Y(1)-O(1) bond lengths are 2.26 Å. V(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. Both V(1)-O(2) bond lengths are 2.20 Å. All V(1)-O(1) bond lengths are 2.14 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1) and two equivalent V(1) atoms to form OY2V2 tetrahedra that share corners with two equivalent O(2)V4 tetrahedra, corners with twelve equivalent O(1)Y2V2 tetrahedra,  an edgeedge with one O(2)V4 tetrahedra, and edges with four equivalent O(1)Y2V2 tetrahedra. In the second O site, O(2) is bonded to four equivalent V(1) atoms to form OV4 tetrahedra that share corners with four equivalent O(2)V4 tetrahedra, corners with twelve equivalent O(1)Y2V2 tetrahedra, and edges with six equivalent O(1)Y2V2 tetrahedra.