Dy2Tc2O7 crystallizes in the cubic Fd-3m space group. Dy(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. Tc(1) is bonded to six equivalent O(1) atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles are 53°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Dy(1) and two equivalent Tc(1) atoms to form distorted ODy2Tc2 tetrahedra that share corners with two equivalent O(2)Dy4 tetrahedra, corners with twelve equivalent O(1)Dy2Tc2 tetrahedra,  an edgeedge with one O(2)Dy4 tetrahedra, and edges with four equivalent O(1)Dy2Tc2 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)Dy2Tc2 tetrahedra, and edges with six equivalent O(1)Dy2Tc2 tetrahedra.
Dy2Tc2O7 crystallizes in the cubic Fd-3m space group. Dy(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. Both Dy(1)-O(2) bond lengths are 2.23 Å. All Dy(1)-O(1) bond lengths are 2.47 Å. Tc(1) is bonded to six equivalent O(1) atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles are 53°. All Tc(1)-O(1) bond lengths are 2.04 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Dy(1) and two equivalent Tc(1) atoms to form distorted ODy2Tc2 tetrahedra that share corners with two equivalent O(2)Dy4 tetrahedra, corners with twelve equivalent O(1)Dy2Tc2 tetrahedra,  an edgeedge with one O(2)Dy4 tetrahedra, and edges with four equivalent O(1)Dy2Tc2 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)Dy2Tc2 tetrahedra, and edges with six equivalent O(1)Dy2Tc2 tetrahedra.