Mg(CuO)2 crystallizes in the monoclinic P2/m space group. Mg(1) is bonded in a square co-planar geometry to four equivalent Cu(2) and four equivalent O(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. In the second Cu site, Cu(2) is bonded in a 8-coordinate geometry to four equivalent Mg(1), two equivalent Cu(2), and two equivalent O(1) atoms. O(1) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1), one Cu(2), and two equivalent Cu(1) atoms.
Mg(CuO)2 crystallizes in the monoclinic P2/m space group. Mg(1) is bonded in a square co-planar geometry to four equivalent Cu(2) and four equivalent O(1) atoms. All Mg(1)-Cu(2) bond lengths are 2.78 Å. All Mg(1)-O(1) bond lengths are 2.00 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Cu(1)-O(1) bond lengths are 1.97 Å. In the second Cu site, Cu(2) is bonded in a 8-coordinate geometry to four equivalent Mg(1), two equivalent Cu(2), and two equivalent O(1) atoms. Both Cu(2)-Cu(2) bond lengths are 2.82 Å. Both Cu(2)-O(1) bond lengths are 2.75 Å. O(1) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1), one Cu(2), and two equivalent Cu(1) atoms.