SmNdO2 is Caswellsilverite-like structured and crystallizes in the tetragonal I4_1/amd space group. Sm(1) is bonded to six O(1,1) atoms to form SmO6 octahedra that share corners with two equivalent Nd(1)O6 octahedra, corners with four equivalent Sm(1)O6 octahedra, edges with four equivalent Sm(1)O6 octahedra, and edges with eight equivalent Nd(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Nd(1) is bonded to six O(1,1) atoms to form NdO6 octahedra that share corners with two equivalent Sm(1)O6 octahedra, corners with four equivalent Nd(1)O6 octahedra, edges with four equivalent Nd(1)O6 octahedra, and edges with eight equivalent Sm(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are three inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Sm(1) and three equivalent Nd(1) atoms to form a mixture of corner and edge-sharing ONd3Sm3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second O site, O(1) is bonded to three equivalent Sm(1) and three equivalent Nd(1) atoms to form a mixture of corner and edge-sharing ONd3Sm3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third O site, O(1) is bonded to three equivalent Sm(1) and three equivalent Nd(1) atoms to form a mixture of corner and edge-sharing ONd3Sm3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°.
SmNdO2 is Caswellsilverite-like structured and crystallizes in the tetragonal I4_1/amd space group. Sm(1) is bonded to six O(1,1) atoms to form SmO6 octahedra that share corners with two equivalent Nd(1)O6 octahedra, corners with four equivalent Sm(1)O6 octahedra, edges with four equivalent Sm(1)O6 octahedra, and edges with eight equivalent Nd(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are two shorter (2.48 Å) and four longer (2.50 Å) Sm(1)-O(1,1) bond lengths. Nd(1) is bonded to six O(1,1) atoms to form NdO6 octahedra that share corners with two equivalent Sm(1)O6 octahedra, corners with four equivalent Nd(1)O6 octahedra, edges with four equivalent Nd(1)O6 octahedra, and edges with eight equivalent Sm(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are four shorter (2.50 Å) and two longer (2.53 Å) Nd(1)-O(1,1) bond lengths. There are three inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Sm(1) and three equivalent Nd(1) atoms to form a mixture of corner and edge-sharing ONd3Sm3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There is one shorter (2.48 Å) and two longer (2.50 Å) O(1)-Sm(1) bond lengths. In the second O site, O(1) is bonded to three equivalent Sm(1) and three equivalent Nd(1) atoms to form a mixture of corner and edge-sharing ONd3Sm3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third O site, O(1) is bonded to three equivalent Sm(1) and three equivalent Nd(1) atoms to form a mixture of corner and edge-sharing ONd3Sm3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are two shorter (2.50 Å) and one longer (2.53 Å) O(1)-Nd(1) bond length.