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15 N nuclear magnetic resonance spectroscopy. Natural‐abundance 15 N spectra of aliphatic oximes
Author(s) -
Botto Robert E.,
Westerman Philip W.,
Roberts John D.
Publication year - 1978
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.1270111008
Subject(s) - chemical shift , chemistry , oxime , abundance (ecology) , spectral line , ring (chemistry) , nitrogen , spectroscopy , delocalized electron , analytical chemistry (journal) , computational chemistry , medicinal chemistry , organic chemistry , physics , quantum mechanics , astronomy , fishery , biology
15 N chemical shifts of the Z and E isomers of twenty‐two ketoximes and fourteen aldoximes have been determined at the natural‐abundance level of 15 N, using Fourier transform methods. The influences of π delocalization, methyl substituents and solute concentration on the oxime nitrogen shielding have been determined. The 15 N shifts for oximes of several cycloalkanones have been measured and the influence of ring size on the chemical shifts is discussed.