CuOMnO2 is Ilmenite structured and crystallizes in the trigonal R-3 space group. Mn(1) is bonded to six equivalent O(1) atoms to form MnO6 octahedra that share corners with nine equivalent Cu(1)O6 octahedra, edges with three equivalent Mn(1)O6 octahedra, and  a faceface with one Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-60°. Cu(1) is bonded to six equivalent O(1) atoms to form distorted CuO6 octahedra that share corners with nine equivalent Mn(1)O6 octahedra, edges with three equivalent Cu(1)O6 octahedra, and  a faceface with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-60°. O(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mn(1) and two equivalent Cu(1) atoms.
CuOMnO2 is Ilmenite structured and crystallizes in the trigonal R-3 space group. Mn(1) is bonded to six equivalent O(1) atoms to form MnO6 octahedra that share corners with nine equivalent Cu(1)O6 octahedra, edges with three equivalent Mn(1)O6 octahedra, and  a faceface with one Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-60°. There are three shorter (1.94 Å) and three longer (1.98 Å) Mn(1)-O(1) bond lengths. Cu(1) is bonded to six equivalent O(1) atoms to form distorted CuO6 octahedra that share corners with nine equivalent Mn(1)O6 octahedra, edges with three equivalent Cu(1)O6 octahedra, and  a faceface with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-60°. There are three shorter (2.01 Å) and three longer (2.17 Å) Cu(1)-O(1) bond lengths. O(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mn(1) and two equivalent Cu(1) atoms.