Materials Data on UWC2 by Materials Project
UWC2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. U6+ is bonded in a 6-coordinate geometry to six C4- atoms. There are a spread of U–C bond distances ranging from 2.32–2.68 Å. W2+ is bonded in a 3-coordinate geometry to five C4- atoms. There are a spread of W–C bond distances ranging from 2.08–2.39 Å. There are two inequivalent C4- sites. In the first C4- site, C4- is bonded to three equivalent U6+, two equivalent W2+, and one C4- atom to form a mixture of distorted edge and corner-sharing CU3W2C octahedra. The corner-sharing octahedra tilt angles range from 16–22°. The C–C bond length is 1.51 Å. In the second C4- site, C4- is bonded in a 5-coordinate geometry to three equivalent U6+, three equivalent W2+, and one C4- atom.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Contributing Organization:
- MIT; UC Berkeley; Duke; U Louvain
- DOE Contract Number:
- AC02-05CH11231; EDCBEE
- OSTI ID:
- 1195400
- Report Number(s):
- mp-20270
- Resource Relation:
- Related Information: https://materialsproject.org/citing
- Country of Publication:
- United States
- Language:
- English
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