Jemmis ED, Pathak B, King RB, Schaefer HF. Bond length and bond multiplicity: σ-bond prevents short π-bonds.
Chem Commun (Camb) 2006:2164-6. [PMID:
16703142 DOI:
10.1039/b602116f]
[Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Analysis of model compounds such as Fe2(CO)6, C2 and HBBH shows that pi-bonds left to themselves are shorter than sigma-bonds; in many ways sigma-bonds prevent pi-bonds from adopting their optimal shorter distances.
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