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1H and 13C NMR of substituted chromium tricarbonyl complexes; substituent effects and Cr(CO3) conformation

✍ Scribed by A. Solladié-Cavallo; J. Suffert

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
443 KB
Volume
14
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

It is shown that ^13^C NMR is not suitable for determining the conformation of the Cr(CO)~3~ group in monosubstituted chromium tricarbonyl complexes. However,. ^1^H NMR can be used for such determinations if one takes substituent effects into account, whn necessary, and an appropriate relationship is proposed. The populations, x~A~, of the eclipsed conformer so obtained for various substituents increase with the π donor ability of the substituent. These results are consistent with X‐ray results and with Carter and Hoffmann's models.

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