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Solvent effects of pyridine on the NMR spectra of carboxylic acids. I—study of the acrylic, trans ‐crotonic and 3‐butenoic acids
Author(s) -
Paasivirta Jaakko,
Kolehmainen Erkki
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.1270070708
Subject(s) - pyridine , chemistry , carbon tetrachloride , solvent , proton magnetic resonance , spectral line , proton , solvent effects , organic chemistry , medicinal chemistry , polymer chemistry , nuclear magnetic resonance , physics , quantum mechanics , astronomy
Proton magnetic resonance spectral parameters of acrylic, trans ‐crotonic and 3‐butenoic acids, their methyl esters and the corresponding alcohols (COOH substituted by CH 2 OH) have been measured for 5% (w/v) solutions in carbon tetrachloride and in pyridine‐ d 5 at 33·5 °C. The total solvent effect of pyridine on the shifts of the skeleton protons of the acid was found to consist of three different effects independently measured from the reference samples.