Very long C–H···O contacts can be weak hydrogen bonds: experimental evidence from crystalline [Cr(CO)3{η6-[7-exo-(CCH)C7H7]}]
- 1 January 1998
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 2,p. 171-172
- https://doi.org/10.1039/a706980d
Abstract
The crystal structure of the title compound contains a very long C–H···O contact from the ethynyl group to a carbonyl ligand with a H···O separation of 2.92 Å; weakly hydrogen bonding character of this contact is inferred from the Raman and the IR absorption spectra, showing the long range nature of the C–H···O hydrogen bond.Keywords
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