Materials Data on Cr3C by Materials Project
Cr3C is Cementite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Cr sites. In the first Cr site, Cr is bonded in a 2-coordinate geometry to three equivalent C atoms. There are a spread of Cr–C bond distances ranging from 2.04–2.32 Å. In the second Cr site, Cr is bonded in a bent 150 degrees geometry to two equivalent C atoms. There are one shorter (2.02 Å) and one longer (2.05 Å) Cr–C bond lengths. C is bonded in a 6-coordinate geometry to eight Cr atoms.
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