MgV4Zn2O10 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted T-shaped geometry to two equivalent Zn(1), one O(10), one O(2), and one O(7) atom. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(2), one O(4), and two equivalent O(3) atoms to form corner-sharing VO5 trigonal bipyramids. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(9), and two equivalent O(4) atoms. In the third V site, V(3) is bonded to one O(1), one O(5), one O(8), and two equivalent O(6) atoms to form a mixture of distorted edge and corner-sharing VO5 trigonal bipyramids. In the fourth V site, V(4) is bonded to one O(2), one O(6), one O(7), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing VO5 trigonal bipyramids. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to two equivalent Mg(1), one O(3), one O(5), and two equivalent O(2) atoms. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(4), one O(6), one O(9), and two equivalent O(1) atoms. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one V(2), one V(3), and two equivalent Zn(2) atoms to form OV2Zn2 tetrahedra that share corners with two equivalent O(1)V2Zn2 tetrahedra and edges with two equivalent O(6)V3Zn trigonal pyramids. In the second O site, O(2) is bonded to one Mg(1), one V(1), one V(4), and two equivalent Zn(1) atoms to form distorted OMgV2Zn2 trigonal bipyramids that share corners with two equivalent O(2)MgV2Zn2 trigonal bipyramids and  a cornercorner with one O(6)V3Zn trigonal pyramid. In the third O site, O(3) is bonded in a 4-coordinate geometry to one V(2), two equivalent V(1), and one Zn(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one V(1), two equivalent V(2), and one Zn(2) atom. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to one V(3), two equivalent V(4), and one Zn(1) atom. In the sixth O site, O(6) is bonded to one V(4), two equivalent V(3), and one Zn(2) atom to form distorted OV3Zn trigonal pyramids that share  a cornercorner with one O(2)MgV2Zn2 trigonal bipyramid, corners with two equivalent O(6)V3Zn trigonal pyramids, and edges with two equivalent O(1)V2Zn2 tetrahedra. In the seventh O site, O(7) is bonded in a water-like geometry to one Mg(1) and one V(4) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one V(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(2) and one Zn(2) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Mg(1) and one V(1) atom.
MgV4Zn2O10 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted T-shaped geometry to two equivalent Zn(1), one O(10), one O(2), and one O(7) atom. There is one shorter (2.59 Å) and one longer (2.69 Å) Mg(1)-Zn(1) bond length. The Mg(1)-O(10) bond length is 2.04 Å. The Mg(1)-O(2) bond length is 2.09 Å. The Mg(1)-O(7) bond length is 2.04 Å. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(2), one O(4), and two equivalent O(3) atoms to form corner-sharing VO5 trigonal bipyramids. The V(1)-O(10) bond length is 1.67 Å. The V(1)-O(2) bond length is 2.11 Å. The V(1)-O(4) bond length is 1.97 Å. There is one shorter (1.97 Å) and one longer (1.98 Å) V(1)-O(3) bond length. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(9), and two equivalent O(4) atoms. The V(2)-O(1) bond length is 2.02 Å. The V(2)-O(3) bond length is 2.02 Å. The V(2)-O(9) bond length is 1.69 Å. There is one shorter (1.94 Å) and one longer (1.97 Å) V(2)-O(4) bond length. In the third V site, V(3) is bonded to one O(1), one O(5), one O(8), and two equivalent O(6) atoms to form a mixture of distorted edge and corner-sharing VO5 trigonal bipyramids. The V(3)-O(1) bond length is 2.03 Å. The V(3)-O(5) bond length is 2.05 Å. The V(3)-O(8) bond length is 1.65 Å. Both V(3)-O(6) bond lengths are 1.99 Å. In the fourth V site, V(4) is bonded to one O(2), one O(6), one O(7), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing VO5 trigonal bipyramids. The V(4)-O(2) bond length is 2.12 Å. The V(4)-O(6) bond length is 1.99 Å. The V(4)-O(7) bond length is 1.67 Å. There is one shorter (1.97 Å) and one longer (1.98 Å) V(4)-O(5) bond length. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to two equivalent Mg(1), one O(3), one O(5), and two equivalent O(2) atoms. The Zn(1)-O(3) bond length is 2.51 Å. The Zn(1)-O(5) bond length is 2.34 Å. There is one shorter (2.09 Å) and one longer (2.52 Å) Zn(1)-O(2) bond length. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(4), one O(6), one O(9), and two equivalent O(1) atoms. The Zn(2)-O(4) bond length is 2.41 Å. The Zn(2)-O(6) bond length is 2.30 Å. The Zn(2)-O(9) bond length is 2.02 Å. There is one shorter (2.05 Å) and one longer (2.09 Å) Zn(2)-O(1) bond length. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one V(2), one V(3), and two equivalent Zn(2) atoms to form OV2Zn2 tetrahedra that share corners with two equivalent O(1)V2Zn2 tetrahedra and edges with two equivalent O(6)V3Zn trigonal pyramids. In the second O site, O(2) is bonded to one Mg(1), one V(1), one V(4), and two equivalent Zn(1) atoms to form distorted OMgV2Zn2 trigonal bipyramids that share corners with two equivalent O(2)MgV2Zn2 trigonal bipyramids and  a cornercorner with one O(6)V3Zn trigonal pyramid. In the third O site, O(3) is bonded in a 4-coordinate geometry to one V(2), two equivalent V(1), and one Zn(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one V(1), two equivalent V(2), and one Zn(2) atom. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to one V(3), two equivalent V(4), and one Zn(1) atom. In the sixth O site, O(6) is bonded to one V(4), two equivalent V(3), and one Zn(2) atom to form distorted OV3Zn trigonal pyramids that share  a cornercorner with one O(2)MgV2Zn2 trigonal bipyramid, corners with two equivalent O(6)V3Zn trigonal pyramids, and edges with two equivalent O(1)V2Zn2 tetrahedra. In the seventh O site, O(7) is bonded in a water-like geometry to one Mg(1) and one V(4) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one V(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(2) and one Zn(2) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Mg(1) and one V(1) atom.