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A study of orientation effects of electronegative substituents on vicinal carbon-proton spin-spin coupling constants and the correlation of the latter with proton-proton coupling constants in the individual rotamers of 13CH3-C(X)1H-C(Y)1H2 fragments

✍ Scribed by Tom Spoormaker; Marius J. A. de Bie

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 653 KB
Volume: 99
Category: Article
ISSN: 0165-0513
DOI: 10.1002/recl.19800990503

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✦ Synopsis

Abstract

Orientation effects of electronegative substituents on vicinal carbon‐proton coupling constants are studied in 1,2‐disubstituted propanes and are found to resemble those on vicinal proton‐proton coupling constants. Known relations for the orientation effect of substituents on synclinal proton‐proton coupling constants can be modified so that they yield reasonable values for synclinal carbon‐proton coupling constants.

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