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Solvent effects upon the proton NMR linewidth in dimethylformamide
Author(s) -
Herres W.,
Ziessow D.
Publication year - 1975
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.1270070902
Subject(s) - dimethylformamide , protonation , laser linewidth , solvent , chemistry , proton , proton nmr , solvent effects , relaxation (psychology) , organic chemistry , physics , ion , laser , quantum mechanics , optics , social psychology , psychology
The NMR linewidth of the formyl proton in dimethylformamide has been studied in the neat liquid and twelve organic solvents. It varies by more than one order of magnitude which is referred to solvent viscosity changes and to the protonation of dimethylformamide. The data do not allow the distinction between N‐ and O‐protonation without further knowledge of the solvent dependence of either the nitrogen‐14 spin lattice relaxation time or the spin‐spin coupling 2 J (NH).