MnCuO4 crystallizes in the orthorhombic Imma space group. Mn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with six equivalent Cu(1)O4 tetrahedra and edges with two equivalent Mn(1)O6 octahedra. Cu(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CuO4 tetrahedra that share corners with six equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(1) and one Cu(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Mn(1) and one Cu(1) atom.
MnCuO4 crystallizes in the orthorhombic Imma space group. Mn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with six equivalent Cu(1)O4 tetrahedra and edges with two equivalent Mn(1)O6 octahedra. Both Mn(1)-O(1) bond lengths are 1.87 Å. All Mn(1)-O(2) bond lengths are 1.94 Å. Cu(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CuO4 tetrahedra that share corners with six equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. Both Cu(1)-O(1) bond lengths are 1.85 Å. Both Cu(1)-O(2) bond lengths are 1.91 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(1) and one Cu(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Mn(1) and one Cu(1) atom.