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The 1 H NMR spectra of zinc complexes of pyridine‐2‐carbaldehyde 2′‐pyridylhydrazone
Author(s) -
Bell C. F.,
Mortimore G. R.,
Reed G. L.
Publication year - 1976
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.1270080111
Subject(s) - chemistry , pyridine , lone pair , chemical shift , nitrogen , zinc , dipole , spectral line , nmr spectra database , crystallography , proton nmr , stereochemistry , medicinal chemistry , molecule , organic chemistry , physics , astronomy
Proton magnetic resonance spectra at 100 MHz are described for some zinc complexes of the E ‐ and Z ‐isomers of pyridine‐2‐carbaldehyde 2′‐pyridylhydrazone in d 6 ‐dimethylsulphoxide solution. Chemical shift data are discussed qualitatively in relation to factors such as the charge on the metal ion, the anisotropy of ligand nitrogen atoms, electric field effects caused by the dipole moment of nitrogen lone pairs, metal‐nonbonded‐hydrogen interactions, ring current effects and the conformational changes undergone by each isomer on coordination.