MgC2O4 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 52°. C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mg(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Mg(1) and one C(1) atom.
MgC2O4 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 52°. Both Mg(1)-O(1) bond lengths are 2.02 Å. There are two shorter (2.17 Å) and two longer (2.27 Å) Mg(1)-O(2) bond lengths. C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.28 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mg(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Mg(1) and one C(1) atom.