MgYMo(WO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted MgO6 octahedra that share edges with two equivalent W(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. Y(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(8) atom. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form WO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form WO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. Mo(1) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), one O(5), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Mg(1), one Y(1), and one W(1) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Mg(1), one Y(1), one W(1), and one Mo(1) atom. In the third O site, O(3) is bonded to one Mg(1), one Y(1), one W(1), one W(2), and one Mo(1) atom to form a mixture of corner and edge-sharing OYMgMoW2 trigonal bipyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Y(1), one W(1), and one W(2) atom to form a mixture of corner and edge-sharing OYMgW2 trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one W(2), and one Mo(1) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Y(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Mo(1) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Y(1), one W(1), and one W(2) atom.
MgYMo(WO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted MgO6 octahedra that share edges with two equivalent W(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The Mg(1)-O(1) bond length is 2.00 Å. The Mg(1)-O(2) bond length is 2.08 Å. The Mg(1)-O(3) bond length is 2.39 Å. The Mg(1)-O(4) bond length is 2.23 Å. The Mg(1)-O(5) bond length is 2.03 Å. The Mg(1)-O(6) bond length is 2.16 Å. Y(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(8) atom. The Y(1)-O(1) bond length is 2.22 Å. The Y(1)-O(2) bond length is 2.33 Å. The Y(1)-O(3) bond length is 2.52 Å. The Y(1)-O(4) bond length is 2.41 Å. The Y(1)-O(6) bond length is 2.32 Å. The Y(1)-O(8) bond length is 2.26 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form WO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The W(1)-O(1) bond length is 1.99 Å. The W(1)-O(2) bond length is 2.16 Å. The W(1)-O(3) bond length is 2.20 Å. The W(1)-O(4) bond length is 2.18 Å. The W(1)-O(7) bond length is 2.01 Å. The W(1)-O(8) bond length is 2.12 Å. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form WO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. The W(2)-O(3) bond length is 2.11 Å. The W(2)-O(4) bond length is 2.06 Å. The W(2)-O(5) bond length is 1.96 Å. The W(2)-O(6) bond length is 1.89 Å. The W(2)-O(7) bond length is 2.11 Å. The W(2)-O(8) bond length is 2.06 Å. Mo(1) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), one O(5), and one O(7) atom. The Mo(1)-O(2) bond length is 2.21 Å. The Mo(1)-O(3) bond length is 2.22 Å. The Mo(1)-O(5) bond length is 2.22 Å. The Mo(1)-O(7) bond length is 2.13 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Mg(1), one Y(1), and one W(1) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Mg(1), one Y(1), one W(1), and one Mo(1) atom. In the third O site, O(3) is bonded to one Mg(1), one Y(1), one W(1), one W(2), and one Mo(1) atom to form a mixture of corner and edge-sharing OYMgMoW2 trigonal bipyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Y(1), one W(1), and one W(2) atom to form a mixture of corner and edge-sharing OYMgW2 trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one W(2), and one Mo(1) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Y(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Mo(1) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Y(1), one W(1), and one W(2) atom.