Dy2V2O7 crystallizes in the cubic Fd-3m space group. Dy(1) is bonded to two equivalent O(2) and six equivalent O(1) atoms to form distorted DyO8 hexagonal bipyramids that share edges with six equivalent Dy(1)O8 hexagonal bipyramids and edges with six equivalent V(1)O6 octahedra. V(1) is bonded to six equivalent O(1) atoms to form VO6 octahedra that share corners with six equivalent V(1)O6 octahedra and edges with six equivalent Dy(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 49°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Dy(1) and two equivalent V(1) atoms to form distorted ODy2V2 tetrahedra that share corners with two equivalent O(2)Dy4 tetrahedra, corners with twelve equivalent O(1)Dy2V2 tetrahedra,  an edgeedge with one O(2)Dy4 tetrahedra, and edges with four equivalent O(1)Dy2V2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Dy(1) atoms to form ODy4 tetrahedra that share corners with four equivalent O(2)Dy4 tetrahedra, corners with twelve equivalent O(1)Dy2V2 tetrahedra, and edges with six equivalent O(1)Dy2V2 tetrahedra.
Dy2V2O7 crystallizes in the cubic Fd-3m space group. Dy(1) is bonded to two equivalent O(2) and six equivalent O(1) atoms to form distorted DyO8 hexagonal bipyramids that share edges with six equivalent Dy(1)O8 hexagonal bipyramids and edges with six equivalent V(1)O6 octahedra. Both Dy(1)-O(2) bond lengths are 2.17 Å. All Dy(1)-O(1) bond lengths are 2.45 Å. V(1) is bonded to six equivalent O(1) atoms to form VO6 octahedra that share corners with six equivalent V(1)O6 octahedra and edges with six equivalent Dy(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 49°. All V(1)-O(1) bond lengths are 1.94 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Dy(1) and two equivalent V(1) atoms to form distorted ODy2V2 tetrahedra that share corners with two equivalent O(2)Dy4 tetrahedra, corners with twelve equivalent O(1)Dy2V2 tetrahedra,  an edgeedge with one O(2)Dy4 tetrahedra, and edges with four equivalent O(1)Dy2V2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Dy(1) atoms to form ODy4 tetrahedra that share corners with four equivalent O(2)Dy4 tetrahedra, corners with twelve equivalent O(1)Dy2V2 tetrahedra, and edges with six equivalent O(1)Dy2V2 tetrahedra.