Rhodium and iridium complexes containing the anion of 1-phenyl-3-methyl-4-benzoyl- pyrazolone-5, a sophisticated analogue of β-diketones |
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Authors: | Flavio Bonati Luis A Oro MTeresa Pinillos |
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Institution: | Dipartimento di Scienze Chimiche dell''Università, 62032 Camerino, Italy;Departamento de Química Inorgánica, Universidad de Zaragoza, Zaragoza, Spain |
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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). |
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Keywords: | Author to whom correspondence should be addressed |
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