Cd2GeO4 is Spinel-like structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form CdO6 octahedra that share corners with four equivalent Cd(1)O6 octahedra, corners with four equivalent Cd(2)O6 octahedra, corners with four equivalent Ge(1)O4 tetrahedra, edges with two equivalent Cd(2)O6 octahedra, and  an edgeedge with one Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-65°. In the second Cd site, Cd(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CdO6 octahedra that share corners with four equivalent Cd(1)O6 octahedra, corners with two equivalent Ge(1)O4 tetrahedra, edges with two equivalent Cd(1)O6 octahedra, edges with two equivalent Cd(2)O6 octahedra, and edges with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 58-65°. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with two equivalent Cd(2)O6 octahedra, corners with four equivalent Cd(1)O6 octahedra,  an edgeedge with one Cd(1)O6 octahedra, and edges with two equivalent Cd(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-61°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Cd(2), two equivalent Cd(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Cd(1), two equivalent Cd(2), and one Ge(1) atom. In the third O site, O(3) is bonded to one Cd(1), two equivalent Cd(2), and one Ge(1) atom to form distorted corner-sharing OCd3Ge trigonal pyramids.
Cd2GeO4 is Spinel-like structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form CdO6 octahedra that share corners with four equivalent Cd(1)O6 octahedra, corners with four equivalent Cd(2)O6 octahedra, corners with four equivalent Ge(1)O4 tetrahedra, edges with two equivalent Cd(2)O6 octahedra, and  an edgeedge with one Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-65°. The Cd(1)-O(2) bond length is 2.26 Å. The Cd(1)-O(3) bond length is 2.36 Å. There are two shorter (2.29 Å) and two longer (2.44 Å) Cd(1)-O(1) bond lengths. In the second Cd site, Cd(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CdO6 octahedra that share corners with four equivalent Cd(1)O6 octahedra, corners with two equivalent Ge(1)O4 tetrahedra, edges with two equivalent Cd(1)O6 octahedra, edges with two equivalent Cd(2)O6 octahedra, and edges with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 58-65°. Both Cd(2)-O(1) bond lengths are 2.37 Å. Both Cd(2)-O(2) bond lengths are 2.31 Å. Both Cd(2)-O(3) bond lengths are 2.32 Å. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with two equivalent Cd(2)O6 octahedra, corners with four equivalent Cd(1)O6 octahedra,  an edgeedge with one Cd(1)O6 octahedra, and edges with two equivalent Cd(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-61°. The Ge(1)-O(2) bond length is 1.79 Å. The Ge(1)-O(3) bond length is 1.75 Å. Both Ge(1)-O(1) bond lengths are 1.78 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Cd(2), two equivalent Cd(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Cd(1), two equivalent Cd(2), and one Ge(1) atom. In the third O site, O(3) is bonded to one Cd(1), two equivalent Cd(2), and one Ge(1) atom to form distorted corner-sharing OCd3Ge trigonal pyramids.