Abstract
The n.m.r. spectra of a number of cobalt(III) dimethylglyoxime complexes of the type Co(DH)2LX where L is triphenylphosphine or pyridine have been measured. The chemical shifts of the dimethylglyoxime methyl hydrogens and the hydrogen-bonded hydrogens depend on the axial ligands and a correlation has been found between the chemical shift of the methyl hydrogens and the Hammett σpara-function of the ligand X. This correlation is interpreted as lending support to the suggestion that the ground-state cis-effect in these complexes reflects changes in the electron density in the cis-ligand.
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Schedule a callMore From: Journal of the Chemical Society A: Inorganic, Physical, Theoretical
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