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Triosmium Clusters derived from Aldehydes, Ketones, and Ketens and their Interconversions

DOI: 10.1039/DT9810000091

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 91 - 98 (1981)

Update date:2022-08-17

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Authors:

Azam, Kazi A.Azam, Kazi A.

Deeming, Antony J.Deeming, Antony J.

Rothwell, Ian P.Rothwell, Ian P.

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Article abstract of DOI:10.1039/DT9810000091

Acyl and enolato-complexes of types (R = CH3, C5H11, C6H13, PhCH2, Me2CH, or Ph) or (R' = H, Me, or Ph) have been obtained by oxidative addition of aldehydes at or by insertion of keten or substituted ketens into an Os-H bond of .In certain cases the interconversion of enolato- and acyl complexes was established and in other cases inferred from their reactivity.The acyl complexes where R = CH3, Ph, or PH2CH (derived from isomerisation of the enolato-complexes where R = Ph) decarbonylate at the ligand to give products derived from the alkyl complexes formed.Most acyl complexes (R = CH3, C5H11, C6H13, or PhCH2) decarbonylate, however, only at the metal with subsequent hydrogen-atom transfer to and form the ligand to give complexes of type 3-R''CCHO)H2> containing a co-ordinated formyl group.Analogous species were obtained from cyclohexanone and or from cyclohexenone and .All the complexes with organic ligands containing oxygen have Os-O bonds.

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