MgGe2(WO4)2 crystallizes in the monoclinic P2 space group. Mg(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted MgO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent W(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. There are two inequivalent W sites. In the first W site, 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 four equivalent Ge(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. In the second W site, W(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form WO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-55°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted GeO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent W(1)O6 octahedra, and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. In the second Ge site, Ge(2) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Ge(1) atom. In the second O site, O(2) is bonded to one Mg(1), one W(1), one W(2), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OMgGeW2 trigonal pyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one W(1), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one W(2), and one Ge(1) atom.
MgGe2(WO4)2 crystallizes in the monoclinic P2 space group. Mg(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted MgO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent W(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. Both Mg(1)-O(2) bond lengths are 2.27 Å. Both Mg(1)-O(3) bond lengths are 2.11 Å. Both Mg(1)-O(4) bond lengths are 2.03 Å. There are two inequivalent W sites. In the first W site, 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 four equivalent Ge(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. Both W(1)-O(1) bond lengths are 2.07 Å. Both W(1)-O(2) bond lengths are 2.06 Å. Both W(1)-O(3) bond lengths are 1.95 Å. In the second W site, W(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form WO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-55°. Both W(2)-O(1) bond lengths are 1.97 Å. Both W(2)-O(2) bond lengths are 2.19 Å. Both W(2)-O(4) bond lengths are 1.96 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted GeO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent W(1)O6 octahedra, and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. Both Ge(1)-O(1) bond lengths are 2.54 Å. Both Ge(1)-O(3) bond lengths are 2.57 Å. Both Ge(1)-O(4) bond lengths are 2.29 Å. In the second Ge site, Ge(2) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(3) atoms. Both Ge(2)-O(2) bond lengths are 2.09 Å. Both Ge(2)-O(3) bond lengths are 2.30 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Ge(1) atom. In the second O site, O(2) is bonded to one Mg(1), one W(1), one W(2), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OMgGeW2 trigonal pyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one W(1), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one W(2), and one Ge(1) atom.