Propylene carbonate electron transfer rate

In a report on the electron transfer between dye/hole transport electrolyte, the electron transfer rate from redox electrolytic solution (0.3 M KI and 0.03 M I2 ethylene carbonate/propylene carbonate (1 1) solution) to oxidized state of Dye 2 was determined to be 110 nsec based on the lifetime of the Dye 2 cation.41) It is much faster (by an order of 103 fold) than the back electron-transfer from Ti02 to oxidized Dye 2. 

For most metals (Hg, Au, Pt, Pb) and solvents (DMSO, CH3CN, propylene carbonate) investigated it is again found that the first electron transfer process is rate limiting and, in solution, the nature of the products from the reaction is a strong function of the conditions under which the reaction is performed. 

Electrochemical studies of electron transfer promoted substitution on [Cr(CO)3(arene)] complexes have been conducted. The 1-e oxidation product [Cr(CO)3(arene)] reacts with PR3 to generate [Cr(CO)2(PR3)(arene)] . [Cr(CO)3(mesitylene)] reacts quantitatively with P(OBu)3 in propylene carbonate to form [Cr(CO)2 P(OBu)3 (mesitylene)]. At slow scan rates disubstitution is observed with P(OCH2)3CMe. Electron transfer ultimately gives [Cr(CO)2(PR3)-(arene)] (Scheme... 

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