MgV4Zn2O10 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a square co-planar geometry to four equivalent O(5) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(4), and three equivalent O(3) atoms to form distorted VO5 trigonal bipyramids that share corners with three equivalent Zn(1)O4 tetrahedra,  a cornercorner with one V(2)O5 trigonal bipyramid, corners with two equivalent V(1)O5 trigonal bipyramids, and edges with two equivalent V(1)O5 trigonal bipyramids. In the second V site, V(2) is bonded to one O(1), one O(5), and three equivalent O(2) atoms to form distorted VO5 trigonal bipyramids that share corners with three equivalent Zn(1)O4 tetrahedra,  a cornercorner with one V(1)O5 trigonal bipyramid, corners with two equivalent V(2)O5 trigonal bipyramids, and edges with two equivalent V(2)O5 trigonal bipyramids. Zn(1) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form ZnO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra, corners with three equivalent V(1)O5 trigonal bipyramids, and corners with three equivalent V(2)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to one V(1), one V(2), and two equivalent Zn(1) atoms to form OV2Zn2 tetrahedra that share corners with two equivalent O(1)V2Zn2 tetrahedra and corners with three equivalent O(5)Mg2VZn tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent V(2) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent V(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to one V(1) and one Zn(1) atom. In the fifth O site, O(5) is bonded to two equivalent Mg(1), one V(2), and one Zn(1) atom to form OMg2VZn tetrahedra that share corners with three equivalent O(1)V2Zn2 tetrahedra, corners with four equivalent O(5)Mg2VZn tetrahedra, and  an edgeedge with one O(5)Mg2VZn tetrahedra.
MgV4Zn2O10 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a square co-planar geometry to four equivalent O(5) atoms. All Mg(1)-O(5) bond lengths are 2.18 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(4), and three equivalent O(3) atoms to form distorted VO5 trigonal bipyramids that share corners with three equivalent Zn(1)O4 tetrahedra,  a cornercorner with one V(2)O5 trigonal bipyramid, corners with two equivalent V(1)O5 trigonal bipyramids, and edges with two equivalent V(1)O5 trigonal bipyramids. The V(1)-O(1) bond length is 2.01 Å. The V(1)-O(4) bond length is 1.69 Å. There are two shorter (1.92 Å) and one longer (2.02 Å) V(1)-O(3) bond length. In the second V site, V(2) is bonded to one O(1), one O(5), and three equivalent O(2) atoms to form distorted VO5 trigonal bipyramids that share corners with three equivalent Zn(1)O4 tetrahedra,  a cornercorner with one V(1)O5 trigonal bipyramid, corners with two equivalent V(2)O5 trigonal bipyramids, and edges with two equivalent V(2)O5 trigonal bipyramids. The V(2)-O(1) bond length is 2.10 Å. The V(2)-O(5) bond length is 1.92 Å. There are two shorter (1.94 Å) and one longer (2.16 Å) V(2)-O(2) bond length. Zn(1) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form ZnO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra, corners with three equivalent V(1)O5 trigonal bipyramids, and corners with three equivalent V(2)O5 trigonal bipyramids. The Zn(1)-O(4) bond length is 2.00 Å. The Zn(1)-O(5) bond length is 2.04 Å. Both Zn(1)-O(1) bond lengths are 2.04 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded to one V(1), one V(2), and two equivalent Zn(1) atoms to form OV2Zn2 tetrahedra that share corners with two equivalent O(1)V2Zn2 tetrahedra and corners with three equivalent O(5)Mg2VZn tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent V(2) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent V(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to one V(1) and one Zn(1) atom. In the fifth O site, O(5) is bonded to two equivalent Mg(1), one V(2), and one Zn(1) atom to form OMg2VZn tetrahedra that share corners with three equivalent O(1)V2Zn2 tetrahedra, corners with four equivalent O(5)Mg2VZn tetrahedra, and  an edgeedge with one O(5)Mg2VZn tetrahedra.