Organonitrogen groups in metal carbonyl complexes. Part IX. Amidino-derivatives of some π-cyclopentadienyl compounds
- 1 January 1975
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 10,p. 930-934
- https://doi.org/10.1039/dt9750000930
Abstract
Lithioamidines, R′NC(R)NR′Li, react with [(π-C5H5)M(CO)3Cl](M = Mo or W) to form the complexes [(π-C5H5)-M(CO)2{R′NC(R)NR′}](R = Ph; R′= H, Ph, or p-tolyl) in which the organonitrogen group acts as a bidentate 3-electron-donor ligand. Bidentate attachment of the amidino-ligand is considered to be of the σ,σ-type, unlike the isoelectronic allyl group. No corresponding amidino-complexes of carbonyl(π-cyclopentadienyl)iron could be isolated at room temperature and the complex [(π-C5H5)Ni{PhNC(Ph)NPh}], obtained from [(π-C5H5)Ni-(PPh3)Cl], appears to be polymeric, possibly through NCN bridges.Keywords
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