Materials Data on SmFeC2 by Materials Project
SmFeC2 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. Sm3+ is bonded in a 8-coordinate geometry to eight equivalent C3- atoms. There are four shorter (2.68 Å) and four longer (2.77 Å) Sm–C bond lengths. Fe3+ is bonded in a 4-coordinate geometry to four equivalent C3- atoms. There is two shorter (1.93 Å) and two longer (2.00 Å) Fe–C bond length. C3- is bonded in a 7-coordinate geometry to four equivalent Sm3+, two equivalent Fe3+, and one C3- atom. The C–C bond length is 1.40 Å.
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