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On the Chemistry of Pyrrole Pigments. 60 —Natural isotopic abundance 15 N NMR spectra of verdinoid bile pigments and their partial structures
Author(s) -
Falk Heinz,
Müller Norbert
Publication year - 1985
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260230514
Subject(s) - chemistry , bile pigments , tautomer , pigment , nmr spectra database , pyrrole , carbon 13 nmr , chemical shift , natural abundance , nuclear magnetic resonance spectroscopy , spectral line , computational chemistry , organic chemistry , mass spectrometry , chromatography , physics , astronomy
15 N NMR spectra, at natural isotopic abundance, of synthetic bilatrienes‐abc and 2,3‐dihydrobilatrienes‐abc and also those of partial structures are presented. The implications of the 15 N chemical shifts on structural features, especially tautomerism, are discussed and compared with results obtained by x‐ray photoelectron spectroscopy.