Mg2WMoO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. Mo(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MoO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one Mo(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one W(1), and one Mo(1) atom. In the third O site, O(3) is bonded to two equivalent Mg(1), one W(1), and one Mo(1) atom to form distorted corner-sharing OMg2MoW tetrahedra.
Mg2WMoO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. The Mg(1)-O(1) bond length is 2.04 Å. The Mg(1)-O(2) bond length is 2.05 Å. There is one shorter (2.06 Å) and one longer (2.10 Å) Mg(1)-O(3) bond length. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. Both W(1)-O(1) bond lengths are 2.00 Å. Both W(1)-O(2) bond lengths are 1.98 Å. Both W(1)-O(3) bond lengths are 2.07 Å. Mo(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MoO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. Both Mo(1)-O(1) bond lengths are 2.16 Å. Both Mo(1)-O(2) bond lengths are 2.14 Å. Both Mo(1)-O(3) bond lengths are 2.19 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one Mo(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one W(1), and one Mo(1) atom. In the third O site, O(3) is bonded to two equivalent Mg(1), one W(1), and one Mo(1) atom to form distorted corner-sharing OMg2MoW tetrahedra.