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KMID : 1059519920360050709
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Journal of the Korean Chemical Society
1992 Volume.36 No. 5 p.709 ~ p.719
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Electrochemical Properties of Binuclear Tetradentate Schiff Base Cobalt(Ⅱ), Nickel(Ⅱ) and Copper(Ⅱ) Complexes in Nonaqueous Solvents. (Ⅴ)
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Chjo Ki-Hyung
Choi Yong-Kook
Lee Song-Ju
Kim Chan-Young
Rim Chae-Pyeong
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Abstract
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We synthesized the binuclear tetradentate Schiff base cobalt(Ⅱ), nickel(Ⅱ) and copper(Ⅱ) complexes such as [Co(Ⅱ)2(TSBP)(L)4], [Ni(Ⅱ)2(TSBP)(L)4] and [Cu(Ⅱ)2(TSBP)] (TSBP: 3,3',4,4'-tetra(salicylideneimino)-1,1'-biphenyl, L: Py, DMSO and DMF). We identified the binucleated structure of these complexes by elemental analysis, IR-spectrum, UV-visible spectrum, T.G.A. and D.S.C. According to the results for cyclic voltammogram and differential pulse polarogram of 1 mM complexes in nonaqueous solvents included 0.1M TEAP-L (L; Py, DMSO and DMF) as supporting electrolyte, it was found that diffusionally controlled redox processes of four steps through with one electron for binucleated Schiff base Cobalt(Ⅱ) complex was Co(Ⅲ)2 e-↔ Co(Ⅲ)Co(Ⅱ) e-↔ Co(Ⅱ)Co(Ⅰ) e-↔ Co(Ⅰ)2 and two steps with one electron for Nickel(Ⅱ) and Copper(Ⅱ) complexes were M(Ⅱ)2 e-↔ M(Ⅱ)M(Ⅰ) e-↔ M(Ⅰ)2 (M; Ni and Cu) in nonaqueous solvents.
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KEYWORD
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