AN UNEXPECTEDLY STRONG CHELATE EFFECT IN A COBALT HALF-SANDWICH COMPLEX WITH AN INTRAMOLECULARLY COORDINATED C-C DOUBLE-BOND

AN UNEXPECTEDLY STRONG CHELATE EFFECT IN A COBALT HALF-SANDWICH COMPLEX WITH AN INTRAMOLECULARLY COORDINATED C-C DOUBLE-BOND

A pronounced chelate effect is observed in the cobalt half-sandwich complex 1, bearing an intramolecularly coordinated 3-butenyl side chain. The chelating C-C double bond is only slowly cleaved under ethylene pressure of 36 atm to form the bis(ethylene) complex 2. Two-electron ligands CO, P(OMe)3, a...

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Veröffentlicht in:Organometallics 1992-12, Vol.11 (12), p.3935-3937
Hauptverfasser: ZIMMERMANN, KH, PILATO, RS, HORVATH, IT, OKUDA, J
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Chemistry, Inorganic & Nuclear
Chemistry, Organic
Exact sciences and technology
Organic chemistry
Organometalloidal and organometallic compounds
Physical Sciences
Preparations and properties
Science & Technology
Transition metals derivatives
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Zusammenfassung:A pronounced chelate effect is observed in the cobalt half-sandwich complex 1, bearing an intramolecularly coordinated 3-butenyl side chain. The chelating C-C double bond is only slowly cleaved under ethylene pressure of 36 atm to form the bis(ethylene) complex 2. Two-electron ligands CO, P(OMe)3, and dimethyl fumarate give chelate complexes 3-5, whereas the bidentate ligand 1,5-cyclooctadiene affords the "open-chain" complex 6.
ISSN:0276-7333
1520-6041
DOI:10.1021/om00060a004