U2AsS is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. U(1) is bonded to three equivalent As(1) and three equivalent S(1) atoms to form a mixture of corner and edge-sharing UAs3S3 octahedra. The corner-sharing octahedra are not tilted. As(1) is bonded to six equivalent U(1) atoms to form AsU6 octahedra that share corners with six equivalent S(1)U6 octahedra, edges with six equivalent As(1)U6 octahedra, and edges with six equivalent S(1)U6 octahedra. The corner-sharing octahedral tilt angles are 2°. S(1) is bonded to six equivalent U(1) atoms to form SU6 octahedra that share corners with six equivalent As(1)U6 octahedra, edges with six equivalent As(1)U6 octahedra, and edges with six equivalent S(1)U6 octahedra. The corner-sharing octahedral tilt angles are 2°.
U2AsS is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. U(1) is bonded to three equivalent As(1) and three equivalent S(1) atoms to form a mixture of corner and edge-sharing UAs3S3 octahedra. The corner-sharing octahedra are not tilted. All U(1)-As(1) bond lengths are 2.90 Å. All U(1)-S(1) bond lengths are 2.84 Å. As(1) is bonded to six equivalent U(1) atoms to form AsU6 octahedra that share corners with six equivalent S(1)U6 octahedra, edges with six equivalent As(1)U6 octahedra, and edges with six equivalent S(1)U6 octahedra. The corner-sharing octahedral tilt angles are 2°. S(1) is bonded to six equivalent U(1) atoms to form SU6 octahedra that share corners with six equivalent As(1)U6 octahedra, edges with six equivalent As(1)U6 octahedra, and edges with six equivalent S(1)U6 octahedra. The corner-sharing octahedral tilt angles are 2°.