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KMID : 1059519930370080702
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Journal of the Korean Chemical Society
1993 Volume.37 No. 8 p.702 ~ p.710
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Electrochemical Reduction of Thionyl Chloride by Tetradentate Schiff Base Transition Metal(II) Complexes : Catalytic Effects
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Kim Woo-Seong
Choi Yong-Kook
Kim Chan-Young
Chjo Ki-Hyung
Kim Jong-Soon
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Abstract
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Electrochemical reduction of thionyl chloride has been carried out at glassy carbon and molybdenum electrodes, the surface of which is modified by binuclear tetradentate schiff base Co(Ⅱ), Ni(Ⅱ),Cu(Ⅱ) and Fe(Ⅱ) complexes. The catalyst molecules of transition metal(Ⅱ) complexes were adsorbed on the electrode surface and reduced thionyl chloride resulting in a generation of oxidized catalyst molecules. There was an optimum concentration for each catalyst compound. The catalytic effects of SOCl2 reduction were larger on glassy carbon electrodes compared to molybdenum electrodes and enhancements in reduction current of up to 120% at the glassy carbon electrodes. The reduction currents of thionyl chloride were increased and the reduction potentials were shifted to the negative potential when scan rates became faster. The reduction of thionyl chloride was proceed to diffusion controlled reaction.
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