20 research outputs found
Racemization studies on the bis(oxalato)2,2′-bipyridine-chromate (III) and the bis(oxalato)1,10-phenanthroline chromate (III) ions
No full textRacemization studies on the new complex anions [Cr(ox)2bipy]- and [Cr(ox)2phen]-show a close similarity to each other in neutral, acidic and basic solutions. Comparisons with other Cr(III) oxalato complexes are made and possible racemization mechanisms are discussed
cis-Platinum(II) amine complexes: some structure-activity relationships for immunosuppressive, nephrotoxic and gastrointestinal (side) effects in rats
No full textAcid-catalysed oxygen-18 exchange, racemisation, and aquation studies with the trisoxalatocobaltate(III) anion in aqueous solution
No full textKinetic data on the acid-catalysed exchange of oxygen between the trisoxalatocobaltate(III) anion and solvent water, obtained by use of oxygen-18, are reported. At 25°C, in the presence of 1M-HCl, the carbonyl oxygen exchanges ca. 50 times faster than the bridging oxygen. Owing to the concurrent decomposition the bridging oxygen exchange could be followed for only 0·1 t1/2 for exchange. Kinetic data for inversion and decomposition have been obtained under the same experimental conditions as used for studying the oxygen exchange. The data exclude the possibility that the mechanism of inversion involves 'one-ended dissociation'. A twist mechanism is favoured
Irritancy and anti-inflammatory activity of bis(η5-cyclopentadienyl)titanium(IV) complexes in rats
No full textRacemization studies on the bis(oxalato)2,2′-bipyridine-chromate (III) and the bis(oxalato)1,10-phenanthroline chromate (III) ions
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Octahedral iron(II) complexes with pyridyl triazine and bipyridine ligands – synthesis, computational studies, mechanisms and kinetics with 1,10-phenanthroline and 2,2′,6,2″-terpyridine
No full textEfficient Training of RBF Networks Via the BYY Automated Model Selection Learning Algorithms
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