MgCr2(SbO4)2 is beta indium sulfide-derived structured and crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form MgO6 octahedra that share corners with six equivalent Sb(2)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 14-20°. Cr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CrO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SbO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Sb(2)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. In the second Sb site, Sb(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form distorted SbO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 14-20°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cr(1) and one Sb(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Cr(1), one Sb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a distorted see-saw-like geometry to one Mg(1), two equivalent Cr(1), and one Sb(2) atom.
MgCr2(SbO4)2 is beta indium sulfide-derived structured and crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form MgO6 octahedra that share corners with six equivalent Sb(2)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 14-20°. Both Mg(1)-O(3) bond lengths are 2.11 Å. All Mg(1)-O(2) bond lengths are 2.18 Å. Cr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CrO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. Both Cr(1)-O(1) bond lengths are 2.05 Å. Both Cr(1)-O(2) bond lengths are 2.05 Å. Both Cr(1)-O(3) bond lengths are 2.02 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SbO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Sb(2)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. Both Sb(1)-O(1) bond lengths are 2.01 Å. All Sb(1)-O(2) bond lengths are 2.03 Å. In the second Sb site, Sb(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form distorted SbO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 14-20°. Both Sb(2)-O(3) bond lengths are 2.29 Å. All Sb(2)-O(2) bond lengths are 2.43 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cr(1) and one Sb(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Cr(1), one Sb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a distorted see-saw-like geometry to one Mg(1), two equivalent Cr(1), and one Sb(2) atom.