Sugden IJ, Plant DF, Bell RG. Thermal rearrangement mechanisms in icosahedral carboranes and metallocarboranes.
Chem Commun (Camb) 2013;
49:975-7. [PMID:
23254297 DOI:
10.1039/c2cc37520f]
[Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ab initio MD and potential energy surface sampling has been used to study the rearrangement processes in carboranes and their derivatives. A new mechanism is found, in addition to those previously proposed. The fact that theoretical activation energies are lower than those observed experimentally, and the differing activity of technetium and rhenium complexes, are rationalised by orbital symmetry constraints.
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