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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 38, Number 2
JKCSEZ 38(2)
April 20, 1994 

Synthesis and Electrochemical Properties of Polymeric Pentadentate Schiff Base Co (Ⅱ), Ni (Ⅱ), and Cu (Ⅱ) Complexes

Polymer 다섯자리 Schiff Base Co(Ⅱ), Ni(Ⅱ) 및 Cu(Ⅱ) 착물들의 합성과 전기화학적 성질
Young KooK Choi, Ki-Hyung Chjo, Jong-Dae Park, Woo-Jong Sim

최용국, 조기형, 박종대, 심우종
Poly(4-vinylpyridine-co-styrene)[PVPS]리간드에 monomer착물인 M(Ⅱ)(SND) 및 M(Ⅱ)(SOPD)[M: Co(Ⅱ), Ni(Ⅱ) 및 Cu(Ⅱ)]들을 반응시켜 새로운 polymer다섯자리 Schiff base착물인 M(Ⅱ)(PVPS)(SND), M(Ⅱ)(PVPS)(SOPD)들을 합성하였다. 이들 착물들의 원소분석, IR-spectra, UV-visible spectra 및 T.G.A.측정결과에 의하여 Co(Ⅱ), Ni(Ⅱ) 및 Cu(Ⅱ) 착물들은 polymer 5배위 착물로 주어짐을 알았다. 또한 0.1M TEAP-DMF용액에서 순환 전압-전류법과 시차펄스 포라로그래피에 의한 이들의 전기화학적 성질은 Co(Ⅱ)(PVPS)(SND) 및 Co(Ⅱ)(PVPS)(SOPD)는 Co(Ⅲ)/Co(Ⅱ) 와 Co(Ⅱ)/Co(Ⅰ)의 두단계의 환원과정이 비가역적으로 일어나고, Ni(Ⅱ)(PVPS)(SND) 와 Ni(Ⅱ)(PVPS)(SOPD)는 Ni(Ⅱ)/Ni(Ⅰ)의 비가역적인 일단계 환원과정으로, 그리고 Cu(Ⅱ)(PVPS)(SND)와 Cu(Ⅱ)(PVPS)(SOPD)는 Cu(Ⅱ)/Cu(Ⅰ)의 비가역적인 일단계 환원과정으로 일어남을 알았다.

Polymeric complexes such as M(Ⅱ)(PVPS)(SND), M(Ⅱ)(PVPS)(SOPD) have been prepared with monomeric complexes, M(Ⅱ)(SND) and M(Ⅱ)(SOPD)[M: Co(Ⅱ), Ni(Ⅱ), and Cu(Ⅱ)] and polymer PVPS. These complexes have been indentified by elemental analysis, spectroscopy, and T.G.A. From the results, it was found that M(Ⅱ)(PVPS)(SND), M(Ⅱ)(PVPS)(SOPD) complexes were penta-coordinated configuration. Electrochemical properties of these complexes studied by cyclic voltammetry and differential pulse polarography in 0.1 M TEAP-DMF solution at glassy carbon electrode. Co(Ⅱ)(PVPS)(SND) and Co(Ⅱ)(PVPS)(SOPD) showed irreversible two step reduction, such as Co(Ⅲ)/Co(Ⅱ) and Co(Ⅱ)/Co(Ⅰ), and Ni(Ⅱ)(PVPS)(SND), Ni(Ⅱ)(PVPS)(SOPD), Cu(Ⅱ)(PVPS)(SND), and Cu(Ⅱ)(PVPS)(SOPD) complexes showed irreversible one step reduction, such as Ni(Ⅱ)/Ni(Ⅰ) and Cu(Ⅱ)/Cu(Ⅰ), respectively.

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