Materials Data on LaCoSi2 by Materials Project
LaCoSi2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. La is bonded in a 4-coordinate geometry to four equivalent Co and ten Si atoms. All La–Co bond lengths are 3.21 Å. There are a spread of La–Si bond distances ranging from 3.14–3.27 Å. Co is bonded in a 9-coordinate geometry to four equivalent La and five Si atoms. There are a spread of Co–Si bond distances ranging from 2.29–2.40 Å. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to six equivalent La, one Co, and two equivalent Si atoms. Both Si–Si bond lengths are 2.52 Å. In the second Si site, Si is bonded in a 8-coordinate geometry to four equivalent La and four equivalent Co atoms.
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