SmCuO3 crystallizes in the trigonal R-3c space group. Sm(1) is bonded in a 9-coordinate geometry to nine equivalent O(1) atoms. Cu(1) is bonded to six equivalent O(1) atoms to form corner-sharing CuO6 octahedra. The corner-sharing octahedral tilt angles are 25°. O(1) is bonded in a 5-coordinate geometry to three equivalent Sm(1) and two equivalent Cu(1) atoms.
SmCuO3 crystallizes in the trigonal R-3c space group. Sm(1) is bonded in a 9-coordinate geometry to nine equivalent O(1) atoms. There are three shorter (2.34 Å) and six longer (2.70 Å) Sm(1)-O(1) bond lengths. Cu(1) is bonded to six equivalent O(1) atoms to form corner-sharing CuO6 octahedra. The corner-sharing octahedral tilt angles are 25°. All Cu(1)-O(1) bond lengths are 1.97 Å. O(1) is bonded in a 5-coordinate geometry to three equivalent Sm(1) and two equivalent Cu(1) atoms.