UCeN2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. U(1) is bonded to six equivalent N(1) atoms to form UN6 octahedra that share corners with six equivalent Ce(1)N6 octahedra, edges with six equivalent U(1)N6 octahedra, and edges with six equivalent Ce(1)N6 octahedra. The corner-sharing octahedral tilt angles are 5°. Ce(1) is bonded to six equivalent N(1) atoms to form CeN6 octahedra that share corners with six equivalent U(1)N6 octahedra, edges with six equivalent U(1)N6 octahedra, and edges with six equivalent Ce(1)N6 octahedra. The corner-sharing octahedral tilt angles are 5°. N(1) is bonded to three equivalent U(1) and three equivalent Ce(1) atoms to form a mixture of corner and edge-sharing NCe3U3 octahedra. The corner-sharing octahedra are not tilted.
UCeN2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. U(1) is bonded to six equivalent N(1) atoms to form UN6 octahedra that share corners with six equivalent Ce(1)N6 octahedra, edges with six equivalent U(1)N6 octahedra, and edges with six equivalent Ce(1)N6 octahedra. The corner-sharing octahedral tilt angles are 5°. All U(1)-N(1) bond lengths are 2.41 Å. Ce(1) is bonded to six equivalent N(1) atoms to form CeN6 octahedra that share corners with six equivalent U(1)N6 octahedra, edges with six equivalent U(1)N6 octahedra, and edges with six equivalent Ce(1)N6 octahedra. The corner-sharing octahedral tilt angles are 5°. All Ce(1)-N(1) bond lengths are 2.57 Å. N(1) is bonded to three equivalent U(1) and three equivalent Ce(1) atoms to form a mixture of corner and edge-sharing NCe3U3 octahedra. The corner-sharing octahedra are not tilted.