SEARCH · Search NASA
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Ni3C is Upper Bainite-like structured and crystallizes in the trigonal R-3c space group. The structure is three-dimensional. Ni+1.33+ is bonded in a bent 120 degrees geometry to two equivalent C4- atoms. Both Ni–C bond lengths are 1.88 Å. C4- is bonded to six equivalent Ni+1.33+ atoms to form corner-sharing CNi6 octahedra. The corner-sharing octahedral tilt angles are 50°.
NiC is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ni2+ is bonded to six equivalent C2- atoms to form a mixture of edge and corner-sharing NiC6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Ni–C bond lengths are 2.03 Å. C2- is bonded to six equivalent Ni2+ atoms to form a mixture of edge and corner-sharing CNi6 octahedra. The corner-sharing octahedral tilt angles are 0°.