Materials Data on TmCoSi2 by Materials Project
TmCoSi2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Tm is bonded in a 4-coordinate geometry to four equivalent Co and ten Si atoms. All Tm–Co bond lengths are 3.04 Å. There are a spread of Tm–Si bond distances ranging from 3.00–3.12 Å. Co is bonded in a 9-coordinate geometry to four equivalent Tm and five Si atoms. There are one shorter (2.21 Å) and four longer (2.30 Å) Co–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to six equivalent Tm, one Co, and two equivalent Si atoms. Both Si–Si bond lengths are 2.41 Å. In the second Si site, Si is bonded in a 12-coordinate geometry to four equivalent Tm and four equivalent Co atoms.
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