Mg(WO2)2 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. Mg(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MgO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with four equivalent W(2)O6 octahedra. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form WO4 tetrahedra that share corners with six equivalent Mg(1)O6 octahedra and corners with six equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-64°. In the second W site, W(2) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form WO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra, edges with two equivalent W(2)O6 octahedra, and edges with four equivalent Mg(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1), one W(1), and one W(2) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one W(1), and two equivalent W(2) atoms.
Mg(WO2)2 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. Mg(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MgO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with four equivalent W(2)O6 octahedra. Both Mg(1)-O(2) bond lengths are 2.10 Å. All Mg(1)-O(1) bond lengths are 2.21 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form WO4 tetrahedra that share corners with six equivalent Mg(1)O6 octahedra and corners with six equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-64°. Both W(1)-O(1) bond lengths are 2.15 Å. Both W(1)-O(2) bond lengths are 2.06 Å. In the second W site, W(2) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form WO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra, edges with two equivalent W(2)O6 octahedra, and edges with four equivalent Mg(1)O6 octahedra. Both W(2)-O(1) bond lengths are 2.18 Å. All W(2)-O(2) bond lengths are 2.16 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1), one W(1), and one W(2) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one W(1), and two equivalent W(2) atoms.