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Materials Data on Sm2Cr2C3 by Materials Project

Sm2Cr2C3 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Sm3+ is bonded in a 6-coordinate geometry to six C4- atoms. There are a spread of Sm–C bond distances ranging from 2.54–3.13 Å. Cr3+ is bonded to four C4- atoms to form a mixture of edge and corner-sharing CrC4 trigonal pyramids. There are a spread of Cr–C bond distances ranging from 1.89–1.99 Å. There are two inequivalent C4- sites. In the first C4- site, C4- is bonded in a 4-coordinate geometry to four equivalent Sm3+ and three equivalent Cr3+ atoms. In the second C4- site, C4- is bonded to four equivalent Sm3+ and two equivalent Cr3+ atoms to form edge-sharing CSm4Cr2 octahedra.

36 MATERIALS SCIENCE↗