TRIS(TRIMETHYLPHOSPHINE)COBALT(0) COMPOUNDS CONTAINING AZAOLEFINIC LIGANDS - SYNTHESES AND STRUCTURES OF BENZO[C]CINNOLINE AND PHENYLISOCYANATE COMPLEXES

Authors
KLEIN HF HELWIG M KARNOP M KONIG H HAMMERSCHMITT B CORDIER G FLORKE U HAUPT HJ
Citation
Hf. Klein et al., TRIS(TRIMETHYLPHOSPHINE)COBALT(0) COMPOUNDS CONTAINING AZAOLEFINIC LIGANDS - SYNTHESES AND STRUCTURES OF BENZO[C]CINNOLINE AND PHENYLISOCYANATE COMPLEXES, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 48(6), 1993, pp. 785-793
Citations number
45
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
48
Issue
6
Year of publication
1993
Pages
785 - 793
Database
ISI
SICI code
0932-0776(1993)48:6<785:TCCAL>2.0.ZU;2-P
Abstract
Mononuclear cobalt(0) complexes Co(eta2-azaolefin)(PMe3) (azaolefin = benzo[c]cinnoline (1), p-dimethylamino-phenyl(phenyl)diazene (2), 1/2 diazobenzene (3), bis(p-tolyl)diazene (4), bis(p-fluorphenyl)diazene ( 5), bis(p-trifluoromethyl-phenyl)diazene (6), phenylisocyanate (7)) ar e obtained from Co(cyclo-C5H8)(PMe3)3 by substitution of the olefin. X -ray crystal structure determinations of 1 and 7 show tetrahedral arra ngements of ligands around the cobalt atom. By reaction with carbon mo noxide carbonyl(phosphine)cobalt(0) complexes are formed. 7 catalyses the cyclotrimerization of phenylisocyanate, while with CoCl(PMe3)3 as a catalyst the cyclic dimer of phenylisocyanate is selectively formed. A convenient synthesis for CoCl(PMe3)3 is described.