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DOE OSTI · 1282957

Materials Data on U4Be2C5 by Materials Project

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Abstract

Be2U4C5 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Be2+ is bonded in a T-shaped geometry to three C4- atoms. There is one shorter (1.76 Å) and two longer (1.82 Å) Be–C bond length. U4+ is bonded to six C4- atoms to form a mixture of distorted corner, edge, and face-sharing UC6 octahedra. The corner-sharing octahedra tilt angles range from 0–98°. There are a spread of U–C bond distances ranging from 2.26–2.63 Å. There are two inequivalent C4- sites. In the first C4- site, C4- is bonded in a 6-coordinate geometry to one Be2+ and five equivalent U4+ atoms. In the second C4- site, C4- is bonded in an octahedral geometry to two equivalent Be2+ and four equivalent U4+ atoms.

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36 MATERIALS SCIENCEBe-C-Ucrystal structureU4Be2C5

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2020-05-03. Materials Data on U4Be2C5 by Materials Project. https://doi.org/10.17188/1282957

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