Abstract
Electron transfer mechanism during redox process of Pt(LSB) 2, a derivative of S-benzyl- N-(ferrocenyl-1-methyl-metylidene)-dithiocarbazate (HLSB), is studied by cyclic voltammetry, differential pulse voltammetry, digitally simulation and in situ FTIR spectroelectrochemistry. Electrochemistry results indicated the redox process of Pt(LSB) 2 involves two consecutive one-electron steps. Coordination of Pt to HLSB resulted in the increase of electron-withdrawing of the dithiocarbazate group, which is demonstrated by the positive shift of redox potentials of Pt(LSB) 2 compared with those of HLSB. The peak–peak separation of 129 mV revealed a strong degree of electronic communication between the two-ferrocene moieties in Pt(LSB) 2. The results of in situ FTIR indicated that electronic communication takes place through the skeleton chain of HLSB due to the extensive electron delocalization in the whole molecule.
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