Materials Data on Tb2C3 by Materials Project
Tb2C3 is Plutonium carbide structured and crystallizes in the cubic I-43d space group. The structure is three-dimensional. Tb3+ is bonded in a 9-coordinate geometry to nine equivalent C2- atoms. There are a spread of Tb–C bond distances ranging from 2.53–2.84 Å. C2- is bonded to six equivalent Tb3+ and one C2- atom to form a mixture of distorted corner, edge, and face-sharing CTb6C trigonal bipyramids. The C–C bond length is 1.34 Å.
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