Materials Data on Fe11MoC4 by Materials Project

Abstract

MoFe11C4 is Cementite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. Mo is bonded in a 2-coordinate geometry to eleven Fe and three C atoms. There are a spread of Mo–Fe bond distances ranging from 2.55–2.70 Å. There are a spread of Mo–C bond distances ranging from 2.17–2.42 Å. There are eleven inequivalent Fe sites. In the first Fe site, Fe is bonded in a distorted bent 150 degrees geometry to one Mo and two C atoms. There are one shorter (1.96 Å) and one longer (2.04 Å) Fe–C bond lengths. In the second Fe site, Fe is bonded in a bent 150 degrees geometry to two equivalent Mo and two C atoms. There is one shorter (1.96 Å) and one longer (1.99 Å) Fe–C bond length. In the third Fe site, Fe is bonded in a distorted bent 150 degrees geometry to one Mo and two C atoms. Both Fe–C bond lengths are 1.98 Å. In the fourth Fe site, Fe is bonded in a distorted bent 150 degrees geometry to one Mo and two C atoms. There is one shorter (1.94 Å) and one longer (1.97 Å) Fe–C bond length. In the fifth Fe site, Fe is bonded in a distorted water-like geometry to two equivalent Mo and two C atoms. There is one shorter (1.98 Å) and one longer (1.99 Å) Fe–C bond length. In the sixth Fe site, Fe is bonded in a 2-coordinate geometry to three C atoms. There are a spread of Fe–C bond distances ranging from 1.99–2.27 Å. In the seventh Fe site, Fe is bonded in a distorted water-like geometry to two C atoms. There is one shorter (1.94 Å) and one longer (1.95 Å) Fe–C bond length. In the eighth Fe site, Fe is bonded in a distorted L-shaped geometry to two equivalent Mo and two C atoms. Both Fe–C bond lengths are 2.06 Å. In the ninth Fe site, Fe is bonded in a distorted water-like geometry to one Mo and two C atoms. There are one shorter (2.00 Å) and one longer (2.05 Å) Fe–C bond lengths. In the tenth Fe site, Fe is bonded in a distorted water-like geometry to one Mo and two C atoms. There are one shorter (1.99 Å) and one longer (2.01 Å) Fe–C bond lengths. In the eleventh Fe site, Fe is bonded in a 3-coordinate geometry to three C atoms. There are two shorter (2.00 Å) and one longer (2.26 Å) Fe–C bond lengths. There are four inequivalent C sites. In the first C site, C is bonded in a 6-coordinate geometry to six Fe atoms. In the second C site, C is bonded in a 7-coordinate geometry to one Mo and six Fe atoms. In the third C site, C is bonded in a 6-coordinate geometry to one Mo and six Fe atoms. In the fourth C site, C is bonded in a 7-coordinate geometry to one Mo and six Fe atoms.