Mg(WO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Mg(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(1), and four equivalent O(2) atoms. W(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 29-45°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent W(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1) and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1) and two equivalent W(1) atoms.
Mg(WO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Mg(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(1), and four equivalent O(2) atoms. The Mg(1)-O(3) bond length is 2.04 Å. The Mg(1)-O(4) bond length is 2.12 Å. Both Mg(1)-O(1) bond lengths are 2.12 Å. There are two shorter (2.49 Å) and two longer (2.70 Å) Mg(1)-O(2) bond lengths. W(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 29-45°. The W(1)-O(3) bond length is 2.05 Å. The W(1)-O(4) bond length is 2.02 Å. There is one shorter (1.93 Å) and one longer (2.10 Å) W(1)-O(1) bond length. There is one shorter (1.95 Å) and one longer (2.01 Å) W(1)-O(2) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent W(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1) and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1) and two equivalent W(1) atoms.