Rhodium and iridium complexes containing the anion of 1-phenyl-3-methyl-4-benzoyl- pyrazolone-5, a sophisticated analogue of β-diketones
- Bonati, F. 2
- Oro, L.A. 1
- Pinillos, M.T. 1
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1
Universidad de Zaragoza
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2
Università di Camerino
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ISSN: 0277-5387
Year of publication: 1985
Volume: 4
Issue: 2
Pages: 357-364
Type: Article
More publications in: Polyhedron
Abstract
Several (diolefin)M(A) complexes (M = Rh, Ir) were prepared, where AH is 1-phenyl-3-methyl- 4-benzoylpyrazolone-5, a very stable asymmetric analogue of acetylacetone. In these complexes the diolefin could be replaced by one mole of (Ph2PCH2CH2)2, two of CO or of PPh3, or three of CNBut, while 1,10-phenanthroline displaced the chelating ligand to yield [(cyclooctadiene)Rh(phen)]+ (A)-. Some compounds X-Y (X-Y = iodine or MeI) added oxidatively yielding the corresponding trivalent species. Using 31P NMR spectra the presence of the expected steric isomers was detected in (Ph3P)(CO)Rh(A) and in (Ph3P) (CO)Rh(A)(X)(Y). © 1985.