HfTiC2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Hf(1) is bonded to six equivalent C(1) atoms to form HfC6 octahedra that share corners with six equivalent Ti(1)C6 octahedra, edges with six equivalent Hf(1)C6 octahedra, and edges with six equivalent Ti(1)C6 octahedra. The corner-sharing octahedral tilt angles are 3°. Ti(1) is bonded to six equivalent C(1) atoms to form TiC6 octahedra that share corners with six equivalent Hf(1)C6 octahedra, edges with six equivalent Hf(1)C6 octahedra, and edges with six equivalent Ti(1)C6 octahedra. The corner-sharing octahedral tilt angles are 3°. C(1) is bonded to three equivalent Hf(1) and three equivalent Ti(1) atoms to form a mixture of corner and edge-sharing CHf3Ti3 octahedra. The corner-sharing octahedra are not tilted.
HfTiC2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Hf(1) is bonded to six equivalent C(1) atoms to form HfC6 octahedra that share corners with six equivalent Ti(1)C6 octahedra, edges with six equivalent Hf(1)C6 octahedra, and edges with six equivalent Ti(1)C6 octahedra. The corner-sharing octahedral tilt angles are 3°. All Hf(1)-C(1) bond lengths are 2.29 Å. Ti(1) is bonded to six equivalent C(1) atoms to form TiC6 octahedra that share corners with six equivalent Hf(1)C6 octahedra, edges with six equivalent Hf(1)C6 octahedra, and edges with six equivalent Ti(1)C6 octahedra. The corner-sharing octahedral tilt angles are 3°. All Ti(1)-C(1) bond lengths are 2.21 Å. C(1) is bonded to three equivalent Hf(1) and three equivalent Ti(1) atoms to form a mixture of corner and edge-sharing CHf3Ti3 octahedra. The corner-sharing octahedra are not tilted.