MgYAg(WO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. Y(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form YO6 octahedra that share 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 26-59°. 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 corners with four equivalent Y(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 26-59°. 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 distorted WO6 octahedra that share corners with four equivalent Y(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-59°. Ag(1) is bonded in a distorted trigonal planar geometry to one O(2), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate 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 T-shaped geometry to one Y(1), one W(1), and one Ag(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one W(2) atom. 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 distorted corner and edge-sharing OYMgW2 trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Y(1), and one W(2) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Y(1), one W(2), and one Ag(1) atom to form a mixture of corner and edge-sharing OYMgAgW tetrahedra. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Mg(1), one W(1), one W(2), and one Ag(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Y(1), one W(1), and one W(2) atom.
MgYAg(WO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. The Mg(1)-O(1) bond length is 2.10 Å. The Mg(1)-O(3) bond length is 2.08 Å. The Mg(1)-O(4) bond length is 2.44 Å. The Mg(1)-O(5) bond length is 2.09 Å. The Mg(1)-O(6) bond length is 2.17 Å. The Mg(1)-O(7) bond length is 2.38 Å. Y(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form YO6 octahedra that share 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 26-59°. The Y(1)-O(1) bond length is 2.24 Å. The Y(1)-O(2) bond length is 2.26 Å. The Y(1)-O(4) bond length is 2.38 Å. The Y(1)-O(5) bond length is 2.38 Å. The Y(1)-O(6) bond length is 2.23 Å. The Y(1)-O(8) bond length is 2.31 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 corners with four equivalent Y(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 26-59°. The W(1)-O(1) bond length is 2.02 Å. The W(1)-O(2) bond length is 1.86 Å. The W(1)-O(3) bond length is 2.08 Å. The W(1)-O(4) bond length is 2.20 Å. The W(1)-O(7) bond length is 2.08 Å. The W(1)-O(8) bond length is 2.04 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 distorted WO6 octahedra that share corners with four equivalent Y(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-59°. The W(2)-O(3) bond length is 2.12 Å. The W(2)-O(4) bond length is 2.06 Å. The W(2)-O(5) bond length is 1.89 Å. The W(2)-O(6) bond length is 1.99 Å. The W(2)-O(7) bond length is 2.04 Å. The W(2)-O(8) bond length is 2.09 Å. Ag(1) is bonded in a distorted trigonal planar geometry to one O(2), one O(6), and one O(7) atom. The Ag(1)-O(2) bond length is 2.28 Å. The Ag(1)-O(6) bond length is 2.19 Å. The Ag(1)-O(7) bond length is 2.19 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate 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 T-shaped geometry to one Y(1), one W(1), and one Ag(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one W(2) atom. 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 distorted corner and edge-sharing OYMgW2 trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Y(1), and one W(2) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Y(1), one W(2), and one Ag(1) atom to form a mixture of corner and edge-sharing OYMgAgW tetrahedra. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Mg(1), one W(1), one W(2), and one Ag(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Y(1), one W(1), and one W(2) atom.