Ge2SbO6 crystallizes in the monoclinic C2/c space group. 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 three equivalent Sb(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-59°. Sb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form distorted SbO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with two equivalent Sb(1)O6 octahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Ge(1) and one Sb(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ge(1) and two equivalent Sb(1) atoms.
Ge2SbO6 crystallizes in the monoclinic C2/c space group. 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 three equivalent Sb(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-59°. The Ge(1)-O(2) bond length is 1.76 Å. The Ge(1)-O(3) bond length is 1.83 Å. There is one shorter (1.76 Å) and one longer (1.77 Å) Ge(1)-O(1) bond length. Sb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form distorted SbO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with two equivalent Sb(1)O6 octahedra. Both Sb(1)-O(2) bond lengths are 2.03 Å. There are two shorter (2.15 Å) and two longer (2.30 Å) Sb(1)-O(3) bond lengths. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Ge(1) and one Sb(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ge(1) and two equivalent Sb(1) atoms.