Cobalt(III) compounds of carbanions and their reactivity. Part I. The preparations and structure of some malononitrilato-compounds
- 1 January 1973
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 4,p. 414-419
- https://doi.org/10.1039/dt9730000414
Abstract
Malononitrile(mnH) reacts with a variety of cobalt(III) compounds of planar quadridentate dianion Schiff-base ligands to produce cobalt alkyls of the type [Co(quadridentate)(mn)(L)](where L is a neutral unidentate ligand). A range of solid compounds has been isolated and six-co-ordinate structures are assigned to most of them on the basis of the electronic spectra, although several may be five-co-ordinate. 1H N.m.r. data are recorded for solutions in C5D5N and (CD3)2SO. The formation reaction appears to involve carbanion nucleophilic substitution at a cobalt(III) centre. The compounds undergo further reaction in pyridine to produce cyano-species of the type [Co(quadridentate)(CN)(py)].Keywords
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