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Influence of paramagnetic shift reagents on the spin-lattice relaxation times of13C nuclei and the13C−1H spin-spin coupling constants

✍ Scribed by V. N. Torocheshnikov; N. M. Sergeev

Publisher: SP MAIK Nauka/Interperiodica
Year: 1984
Tongue: English
Weight: 236 KB
Volume: 24
Category: Article
ISSN: 0022-4766
DOI: 10.1007/bf00755562

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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.