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The assignment of the 1 H and the 13 C NMR chemical shifts of N ‐phenyl‐2,4‐dimethylbuta‐1,3‐diene‐1,4‐sultam
Author(s) -
Radeglia R.,
Fanghänel E.
Publication year - 1981
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270170104
Subject(s) - decoupling (probability) , chemistry , nmr spectra database , chemical shift , spectral line , carbon 13 nmr satellite , carbon 13 nmr , diene , nuclear magnetic resonance , nuclear magnetic resonance spectroscopy , stereochemistry , fluorine 19 nmr , physics , organic chemistry , natural rubber , astronomy , control engineering , engineering
The assignment of the signals in the 13 C and 1 H NMR spectra of N ‐phenyl‐2,4‐dimethylbuta‐1,3‐diene‐1,4‐sultam is difficult for the signal pairs C‐2 and C‐4, C‐1 and C‐3, (C‐1)H, (C‐2)CH 3 and (C‐4)CH 3 . The 13 C NMR spectrum recorded under gated decoupling conditions provide long‐range couplings which make possible an unambiguous assignment of the 13 C NMR signal pairs. Application of the 1 H CW off‐resonance decoupling technique in recording the 13 C NMR spectra enables the assignment information from the 13 C NMR spectrum to be transferred to the 1 H NMR spectrum.