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Nuclear spin-spin coupling via nonbonded interactions. 5. The orientational dependence of .alpha.-substituent effects on vicinal carbon-13-carbon-13 coupling constants

✍ Scribed by Barfield, M.; Canada, E. D.; McDaniel, C. R.; Marshall, J. L.; Walter, S. R.

Book ID: 126927744
Publisher: American Chemical Society
Year: 1983
Tongue: English
Weight: 904 KB
Volume: 105
Category: Article
ISSN: 0002-7863
DOI: 10.1021/ja00349a005

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## Abstract The magnitude of the NMR spin‐spin coupling constant, ^3^__J__(CH), between a vicinal ^13^C–^1^H pair depends, __inter alia__, on the value of the torsion angle Φ~CH~(^13^CCCH) and is influenced by the presence of an electronegative substituent located on the coupling ^13^C nucleus.