Materials Data on Ni6Mo6C by Materials Project
Ni6Mo6C crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Mo is bonded in a distorted single-bond geometry to six Ni and one C atom. There are a spread of Mo–Ni bond distances ranging from 2.59–2.73 Å. The Mo–C bond length is 2.16 Å. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded in a 12-coordinate geometry to six equivalent Mo and six Ni atoms. There are three shorter (2.36 Å) and three longer (2.58 Å) Ni–Ni bond lengths. In the second Ni site, Ni is bonded to six equivalent Mo and six equivalent Ni atoms to form NiNi6Mo6 cuboctahedra that share corners with six equivalent CMo6 octahedra and faces with six equivalent NiNi6Mo6 cuboctahedra. The corner-sharing octahedral tilt angles are 45°. C is bonded to six equivalent Mo atoms to form CMo6 octahedra that share corners with twelve equivalent NiNi6Mo6 cuboctahedra.