Premium
Kernresonanz‐spektroskopische Untersuchung protonierter Stickstoffverbindungen in Trifluoressigsäure
Author(s) -
Giger W.,
Simon W.
Publication year - 1970
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19700530707
Subject(s) - chemistry , trifluoroacetic acid , protonation , pyridinium , ammonium , ion , coupling constant , nitrogen , medicinal chemistry , organic chemistry , physics , particle physics
The nuclear magnetic resonance spectra of a series of protonated organic nitrogen compounds in trifluoroacetic acid solution have been studied. A direct correlation between the exchange rate of the ammonium protons and the acidity constant of the functional group is established. Substituted anilinium and pyridinium ions with p K values below 4 show coalescence for the signals of N ⊕ H protons and disappearence of the coupling with the α protons.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom