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Gas‐phase NMR studies of chemical equilibria: 1—Methodology
Author(s) -
Harris Robin K.,
Rao Renée C.
Publication year - 1983
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/omr.1270210914
Subject(s) - tetramethylsilane , tautomer , methanol , chemistry , gas phase , keto–enol tautomerism , acetaldehyde , chemical shift , nmr spectra database , computational chemistry , spectral line , proton nmr , analytical chemistry (journal) , thermodynamics , organic chemistry , ethanol , physics , quantum mechanics
Abstract Methods for obtaining 1 H NMR spectra of gases are discussed. Particular attention is paid to the nature of the tube and to the use of ‘second sample’ field/frequency locking. The question of the chemical shift reference is examined, and some results for tetramethylsilane gas are presented. Representative spectra are shown for three types of organic equilibria in the gas phase: keto‐enol tautomerism, addition of methanol to acetaldehyde and Z ‐ E isomerism of acetaldoxime.