ThSmN2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Th(1) is bonded to six equivalent N(1) atoms to form ThN6 octahedra that share corners with six equivalent Sm(1)N6 octahedra, edges with six equivalent Th(1)N6 octahedra, and edges with six equivalent Sm(1)N6 octahedra. The corner-sharing octahedral tilt angles are 2°. Sm(1) is bonded to six equivalent N(1) atoms to form SmN6 octahedra that share corners with six equivalent Th(1)N6 octahedra, edges with six equivalent Th(1)N6 octahedra, and edges with six equivalent Sm(1)N6 octahedra. The corner-sharing octahedral tilt angles are 2°. N(1) is bonded to three equivalent Th(1) and three equivalent Sm(1) atoms to form a mixture of edge and corner-sharing NSm3Th3 octahedra. The corner-sharing octahedra are not tilted.
ThSmN2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Th(1) is bonded to six equivalent N(1) atoms to form ThN6 octahedra that share corners with six equivalent Sm(1)N6 octahedra, edges with six equivalent Th(1)N6 octahedra, and edges with six equivalent Sm(1)N6 octahedra. The corner-sharing octahedral tilt angles are 2°. All Th(1)-N(1) bond lengths are 2.53 Å. Sm(1) is bonded to six equivalent N(1) atoms to form SmN6 octahedra that share corners with six equivalent Th(1)N6 octahedra, edges with six equivalent Th(1)N6 octahedra, and edges with six equivalent Sm(1)N6 octahedra. The corner-sharing octahedral tilt angles are 2°. All Sm(1)-N(1) bond lengths are 2.59 Å. N(1) is bonded to three equivalent Th(1) and three equivalent Sm(1) atoms to form a mixture of edge and corner-sharing NSm3Th3 octahedra. The corner-sharing octahedra are not tilted.