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DOE OSTI · 1283950

Materials Data on CaC2 by Materials Project

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Abstract

CaC2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. Ca2+ is bonded to six equivalent C1- atoms to form CaC6 octahedra that share corners with eight equivalent CaC6 octahedra, corners with six equivalent CCa3C tetrahedra, and edges with two equivalent CaC6 octahedra. The corner-sharing octahedral tilt angles are 75°. All Ca–C bond lengths are 2.62 Å. C1- is bonded to three equivalent Ca2+ and one C1- atom to form CCa3C tetrahedra that share corners with three equivalent CaC6 octahedra, corners with thirteen equivalent CCa3C tetrahedra, and an edgeedge with one CCa3C tetrahedra. The corner-sharing octahedra tilt angles range from 64–65°. The C–C bond length is 1.26 Å.

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36 MATERIALS SCIENCEC-CaCaC2crystal structure

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2020-07-23. Materials Data on CaC2 by Materials Project. https://doi.org/10.17188/1283950

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