MgCr3InO8 crystallizes in the monoclinic Cm space group. Mg(1) is bonded in a distorted trigonal non-coplanar geometry to one In(1), one O(6), and two equivalent O(3) atoms. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form corner-sharing CrO4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-49°. In the second Cr site, Cr(2) is bonded to one O(5), one O(6), and two equivalent O(3) atoms to form corner-sharing CrO4 tetrahedra. The corner-sharing octahedral tilt angles range from 28-50°. In the third Cr site, Cr(3) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form corner-sharing CrO6 octahedra. In(1) is bonded in a 4-coordinate geometry to one Mg(1), one O(2), and two equivalent O(1) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cr(1), one Cr(3), and one In(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cr(1) and one In(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mg(1), one Cr(2), and one Cr(3) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Cr(2) and one Cr(3) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Mg(1) and one Cr(2) atom.
MgCr3InO8 crystallizes in the monoclinic Cm space group. Mg(1) is bonded in a distorted trigonal non-coplanar geometry to one In(1), one O(6), and two equivalent O(3) atoms. The Mg(1)-In(1) bond length is 2.80 Å. The Mg(1)-O(6) bond length is 1.96 Å. Both Mg(1)-O(3) bond lengths are 2.01 Å. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form corner-sharing CrO4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-49°. The Cr(1)-O(2) bond length is 1.72 Å. The Cr(1)-O(4) bond length is 1.68 Å. Both Cr(1)-O(1) bond lengths are 1.76 Å. In the second Cr site, Cr(2) is bonded to one O(5), one O(6), and two equivalent O(3) atoms to form corner-sharing CrO4 tetrahedra. The corner-sharing octahedral tilt angles range from 28-50°. The Cr(2)-O(5) bond length is 1.68 Å. The Cr(2)-O(6) bond length is 1.72 Å. Both Cr(2)-O(3) bond lengths are 1.76 Å. In the third Cr site, Cr(3) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form corner-sharing CrO6 octahedra. The Cr(3)-O(4) bond length is 1.96 Å. The Cr(3)-O(5) bond length is 1.99 Å. Both Cr(3)-O(1) bond lengths are 2.02 Å. Both Cr(3)-O(3) bond lengths are 2.05 Å. In(1) is bonded in a 4-coordinate geometry to one Mg(1), one O(2), and two equivalent O(1) atoms. The In(1)-O(2) bond length is 2.19 Å. Both In(1)-O(1) bond lengths are 2.32 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cr(1), one Cr(3), and one In(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cr(1) and one In(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mg(1), one Cr(2), and one Cr(3) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Cr(2) and one Cr(3) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Mg(1) and one Cr(2) atom.