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AbstractAbstract
[en] Ethanolic solutions of (Rh1(CO)2Cl)2 and aqueous solutions of (RhII(CH3COO)2)2 have been investigated by pulse radiolysis under CO or N2 atmosphere. In the first case the reduction of the RhI complex is shown to proceed via CO- formation. In the second case, several steps have been evidenced, one of them extremely fast, indicating an exceptional reactivity of such a binuclear rhodium structure towards the electron. Spectra of transient species at different times are presented. A species absorbing at 520nm, already present at 10ns, is assigned to a RhIRhII complex resulting itself from a reaction of the initial salt with pre-solvated electrons. A mechanism is proposed to account for the decay kinetics of eaq- and the spectral changes. The rate constants are evaluated for each of the five steps occurring within the first microsecond. (author)
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Journal Article
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ALCOHOLS, BEAMS, CHEMICAL RADIATION EFFECTS, CHEMICAL REACTIONS, COMPLEXES, DECOMPOSITION, DISPERSIONS, ELECTRONS, ELEMENTARY PARTICLES, FERMIONS, HOMOGENEOUS MIXTURES, HYDROXY COMPOUNDS, IRRADIATION, KINETICS, LEPTON BEAMS, LEPTONS, MIXTURES, ORGANIC COMPOUNDS, PARTICLE BEAMS, RADIATION EFFECTS, REACTION KINETICS, SOLUTIONS, SPECTRA, TRANSITION ELEMENT COMPLEXES
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