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Original Articles

Synergistic Complexes of Uranyl Ion with 1-Phenyl-3-methyl-4-benzoyl-pyrazolone-5 and Some Oxodonors

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Pages 1067-1076 | Received 21 Jan 1983, Accepted 19 Aug 1983, Published online: 13 Dec 2006
 

Abstract

Solid complexes of uranyl ion with 1-phenyl-3-methyl-4-benzoyl-pyrazolons-5 (PMBP) and diphenylsulphoxide (DPSO), di-benzylsulphoxide(DBeSO), dibutylsulphoxide (DBuSO), dihexyl-sulphoxide (DHSO), dioctylsulphoxide (DOSO) and tributylpnosphate (TBP) have been isolated by solvent extraction. Analytical data establish their stoichiometry as UO2 (PMBP)2·X where X is the oxodonor. The S-O stretching frequencies and the asymmetric stretch as well as the bending frequencies of the (O-U-O) group have been empirically assigned from their IR spectra. Bands due to metal-oxygen stretching frequencies of the pyrazolone and oxo donor moieties have been assigned. The phenyl protons of the aroyl and phenyl group, methyl protons of the pyrazolone ring as well as the ∝-methylene protons of the oxo donor have been unequivocally assigned and interpreted from their PMR spectra. These complexes in general have been found to be strikingly similar to those having TTA (2-thenoyl trifluoroacetone) as the chelating ligand.

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