MgV2Cr2O8 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form MgO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra, corners with two equivalent V(1)O4 tetrahedra, and  an edgeedge with one V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 62-64°. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form VO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-54°. In the second V site, V(2) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form VO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-60°. Cr(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form CrO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent V(1)O4 tetrahedra, corners with three equivalent V(2)O4 tetrahedra, and edges with two equivalent Cr(1)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(2), and two equivalent Cr(1) atoms to form distorted edge-sharing OMgVCr2 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one V(2) and one Cr(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mg(1), one V(1), and one Cr(1) atom.
MgV2Cr2O8 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form MgO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra, corners with two equivalent V(1)O4 tetrahedra, and  an edgeedge with one V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 62-64°. Both Mg(1)-O(1) bond lengths are 2.04 Å. Both Mg(1)-O(4) bond lengths are 1.95 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form VO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-54°. Both V(1)-O(2) bond lengths are 1.83 Å. Both V(1)-O(4) bond lengths are 1.83 Å. In the second V site, V(2) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form VO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-60°. Both V(2)-O(1) bond lengths are 1.99 Å. Both V(2)-O(3) bond lengths are 1.72 Å. Cr(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form CrO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent V(1)O4 tetrahedra, corners with three equivalent V(2)O4 tetrahedra, and edges with two equivalent Cr(1)O6 octahedra. The Cr(1)-O(3) bond length is 1.98 Å. The Cr(1)-O(4) bond length is 2.02 Å. Both Cr(1)-O(1) bond lengths are 2.12 Å. Both Cr(1)-O(2) bond lengths are 2.04 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(2), and two equivalent Cr(1) atoms to form distorted edge-sharing OMgVCr2 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one V(2) and one Cr(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mg(1), one V(1), and one Cr(1) atom.