1 H and 13 C NMR of substituted chromium tricarbonyl complexes; substituent effects and Cr(CO 3 ) conformation
1980; Wiley; Volume: 14; Issue: 5 Linguagem: Inglês
10.1002/mrc.1270140520
ISSN0030-4921
AutoresArlette Solladié‐Cavallo, Jean Suffert,
Tópico(s)Analytical Chemistry and Chromatography
ResumoAbstract 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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