High-pressure NMR studies of [(η3-C5H5)(η5-C5H5)Cr(CO)2]. Evidence for concerted ring interchange

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)194-195
Journal / PublicationAngewandte Chemie (International Edition in English)
Issue number2
Publication statusPublished - Feb 1990
Externally publishedYes


Not CO elimination/addition with “ring slippage” but rather a concerted straightening and bending of the two C5H5 rings in 2 is responsible for ring interchange. The reaction was studied by high-pressure 1H and 13C NMR measurements of 1/CO. The activation barrier for the ring interchange is 13.5 ± 1 kcal mol−1. An analysis of the electronic situation in 2 explains this unusual behavior.

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