Materials Data on Co3C by Materials Project
Co3C is Cementite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Co+1.33+ sites. In the first Co+1.33+ site, Co+1.33+ is bonded in a distorted water-like geometry to three equivalent C4- atoms. There are two shorter (1.98 Å) and one longer (2.38 Å) Co–C bond lengths. In the second Co+1.33+ site, Co+1.33+ is bonded in a bent 150 degrees geometry to two equivalent C4- atoms. There is one shorter (1.92 Å) and one longer (1.93 Å) Co–C bond length. C4- is bonded in a 6-coordinate geometry to eight Co+1.33+ atoms.
36 MATERIALS SCIENCE↗