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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 36, Number 5
JKCSEZ 36(5)
October 20, 1992 

 
Title
Electrochemical Properties of Binuclear Tetradentate Schiff Base Cobalt(Ⅱ), Nickel(Ⅱ) and Copper(Ⅱ) Complexes in Nonaqueous Solvents. (Ⅴ)

비수용매에서 이핵성 네자리 Schiff Base Cobalt(Ⅱ), Nickel(Ⅱ) 및 Copper(Ⅱ) 착물들의 전기화학적 성질 (제 5 보)
Author
Ki-Hyung Chjo, Young-Kook Choi, Song-Ju Lee, Chan-Young Kim, Chae-Pyeong Rim

조기형, 최용국, 이송주, 김찬영, 임채평
Keywords
Abstract
이핵성 네자리 Schiff base 의 cobalt(Ⅱ), nickel(Ⅱ) 및 copper(Ⅱ) 착물인 [Co(Ⅱ)2(TSBP)(L)4], [Ni(Ⅱ)2(TSBP)(L)4] 및 [Cu(Ⅱ)2(TSBP)] (TSBP: 3,3',4,4'-tetra(salicylideneimino)-1,1'-biphenyl, L: Py, DMSO 및 DMF)들을 합성하여 원소분석, IR-spectrum, UV-visible spectrum, T.G.A. 및 D.S.C.를 측정하여 이핵성 착물로 주어짐을 확인하였다. 지지전해질로서 0.1M TEAP-L (L; Py, DMSO 및 DMF)에서 1mM-착물용액의 순환전압-전류법과 D.P.P.법으로 전기화학적 성질을 측정한 결과 이핵성 cobalt(Ⅱ) 착물은 일전자의 확산 지배적인 네단계의 산화-환원과정이 Co(Ⅲ)2 e-↔ Co(Ⅲ)Co(Ⅱ) e-↔ Co(Ⅱ)Co(Ⅰ) e-↔ Co(Ⅰ)2 으로 일어나고 이핵성 nickel(Ⅱ) 및 copper(Ⅱ) 착물들은 일전자의 확산지배적인 두 단계의 산화-환원과정이 M(Ⅱ)2 e-↔ M(Ⅱ)M(Ⅰ) e-↔ M(Ⅰ)2 (M; Ni 및 Cu)으로 일어남을 알았다.

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.

Page
709 - 719
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