Electrochemical reactions of pincer rhodium(I) complexes
نویسندگان
چکیده
The electrochemical properties of the (PCP)Rh(H2) (1-H2, PCP 1⁄4 k-C6H3e2,6-(CH2P(Bu2)) complex was examined by cyclic voltammetry in acetonitrile (MeCN), dimethylsulfoxide (DMSO) and 1,2difluorobenzene (1,2-DFB). Upon oxidation in weakly or non-coordinating media such as 0.05 M NaBAr24 in 1,2-difluorobenzene, simple one electron oxidation to [(PCP)RhII(H2)]þ is observed. Conversely, in coordinating solvents (e.g. acetonitrile and dimethylsulfoxide) the reactivity is dominated by solvent coordinated species with a slight variation in the RhIII/II oxidation potentials as a function of the supporting electrolyte conductivity. A computational analysis of these reactions in support of the proposed mechanism is presented. 2014 Elsevier B.V. All rights reserved.
منابع مشابه
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