Materials Data on Mn3C by Materials Project
Mn3C is Cementite structured and crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two Mn3C sheets oriented in the (0, 0, 1) direction. there are two inequivalent Mn sites. In the first Mn site, Mn is bonded in a 2-coordinate geometry to two equivalent C atoms. There is one shorter (1.98 Å) and one longer (2.00 Å) Mn–C bond length. In the second Mn site, Mn is bonded in a bent 150 degrees geometry to two equivalent C atoms. There is one shorter (1.95 Å) and one longer (1.99 Å) Mn–C bond length. C is bonded in a 6-coordinate geometry to six Mn atoms.
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