Studies on Electroanalytical Chemistry for the Oxygen Adducted Tetradentate Schiff base Cobalt(III) Complexes in Pyridine Solution

Rim, Chae-Pyeong; 임채평; Chae, Hee-Nam; 채희남; Chjo, Ki-Hyung; 조기형; Choi, Yong-Kook; 최용국

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.8, No.1

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Studies on Electroanalytical Chemistry for the Oxygen Adducted Tetradentate Schiff base Cobalt(III) Complexes in Pyridine Solution

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1995, v.8 no.1, pp.55-62

Rim, Chae-Pyeong
Chae, Hee-Nam
Chjo, Ki-Hyung
Choi, Yong-Kook

Rim, C., Chae, H., Chjo, K., & Choi, Y. (1995). Studies on Electroanalytical Chemistry for the Oxygen Adducted Tetradentate Schiff base Cobalt(III) Complexes in Pyridine Solution. , 8(1), 55-62.

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Abstract

Tetradentate Schiff base cobalt(II) complexes such as $Co(II)_2-N$, N-bis(salicylidene)-m-phenylendiimine; [$Co(II)_2(SMPD)_2(H_2O)_4$] and $Co(II)_2-N$, N-bis(salicylidene)-p-phenylendiimine: [$Co(II)_2(SPPD)_2(H_2O)_4$], and oxygen adducted cobalt (III) complexes such as [$Co(III)_2O_2(SMPD)_2(Py)_2$] and [$Co(III)_2O_2(SPPD)_2(Py)_2$] in pyridine solutions were synthesized. It was identified that the oxygen adducted cobalt(III) complexes have hexacoordinated octahedral configuration with pyridine and oxygen from the measurement of elemental analysis, AA, IR spectra, and TGA. The redox processes were investigated for the oxygen adducted complexes in 0.1M TEAP-pyridine solution, using cyclic voltammetry on the glassy carbon electrode. The redox processes of oxygen adducted Co(III) complexes result in $$[Co(III)_2-O_2-CO(III)]\rightarrow^{e^-}[Co(III)-O_2-Co(II)]\rightarrow^{e^-}[Co(II)-O_2-Co(II)]\rightleftarrows^{e^-}[Co(II)+Co(II)+O_2{\cdot}^-]\rightleftarrows^{e^-}[Co(II)+Co(I)+O_2{\cdot}^-]\rightleftarrows^{e^-}[Co(I)+Co(I)+O_2{\cdot}^-]$$.