MgV4Ag2O11 crystallizes in the monoclinic C2 space group. Mg(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(5), and three equivalent O(6) atoms to form distorted VO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent Ag(1)O5 square pyramids, edges with two equivalent V(1)O6 octahedra, and edges with three equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles are 30°. In the second V site, V(2) is bonded to one O(2), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form distorted VO6 octahedra that share corners with three equivalent V(2)O6 octahedra, corners with three equivalent Ag(1)O5 square pyramids, and edges with three equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-34°. Ag(1) is bonded to two equivalent O(1) and three equivalent O(3) atoms to form AgO5 square pyramids that share corners with two equivalent V(1)O6 octahedra, corners with three equivalent V(2)O6 octahedra, and edges with four equivalent Ag(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 36-68°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(1), and two equivalent Ag(1) atoms to form distorted OMgVAg2 trigonal pyramids that share corners with three equivalent O(1)MgVAg2 trigonal pyramids and corners with three equivalent O(6)V4 trigonal pyramids. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one V(2) and three equivalent Ag(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent V(2) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one V(1) and two equivalent V(2) atoms. In the sixth O site, O(6) is bonded to one V(2) and three equivalent V(1) atoms to form distorted OV4 trigonal pyramids that share corners with two equivalent O(6)V4 trigonal pyramids, corners with three equivalent O(1)MgVAg2 trigonal pyramids, and edges with two equivalent O(6)V4 trigonal pyramids.
MgV4Ag2O11 crystallizes in the monoclinic C2 space group. Mg(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Mg(1)-O(1) bond lengths are 2.04 Å. Both Mg(1)-O(2) bond lengths are 1.95 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(5), and three equivalent O(6) atoms to form distorted VO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent Ag(1)O5 square pyramids, edges with two equivalent V(1)O6 octahedra, and edges with three equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles are 30°. The V(1)-O(1) bond length is 1.78 Å. The V(1)-O(2) bond length is 1.99 Å. The V(1)-O(5) bond length is 2.02 Å. There are two shorter (1.95 Å) and one longer (2.15 Å) V(1)-O(6) bond length. In the second V site, V(2) is bonded to one O(2), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form distorted VO6 octahedra that share corners with three equivalent V(2)O6 octahedra, corners with three equivalent Ag(1)O5 square pyramids, and edges with three equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-34°. The V(2)-O(2) bond length is 1.94 Å. The V(2)-O(3) bond length is 1.70 Å. The V(2)-O(4) bond length is 1.85 Å. The V(2)-O(6) bond length is 2.24 Å. There is one shorter (1.96 Å) and one longer (1.98 Å) V(2)-O(5) bond length. Ag(1) is bonded to two equivalent O(1) and three equivalent O(3) atoms to form AgO5 square pyramids that share corners with two equivalent V(1)O6 octahedra, corners with three equivalent V(2)O6 octahedra, and edges with four equivalent Ag(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 36-68°. Both Ag(1)-O(1) bond lengths are 2.36 Å. There are a spread of Ag(1)-O(3) bond distances ranging from 2.33-2.50 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(1), and two equivalent Ag(1) atoms to form distorted OMgVAg2 trigonal pyramids that share corners with three equivalent O(1)MgVAg2 trigonal pyramids and corners with three equivalent O(6)V4 trigonal pyramids. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one V(2) and three equivalent Ag(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent V(2) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one V(1) and two equivalent V(2) atoms. In the sixth O site, O(6) is bonded to one V(2) and three equivalent V(1) atoms to form distorted OV4 trigonal pyramids that share corners with two equivalent O(6)V4 trigonal pyramids, corners with three equivalent O(1)MgVAg2 trigonal pyramids, and edges with two equivalent O(6)V4 trigonal pyramids.