ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 35, Number 4
JKCSEZ 35(4)
August 20, 1991 

We synthesized the binuclear Tetradentate Schiff base cobalt (Ⅱ) complexes; [Co(Ⅱ)2(SMPD)2(L)2] and [Co(Ⅱ)2(SPPD)2(L)2] (where, SMPD: N,N'-bis(salicylaldehyde)-m-phenylenediimine, SPPD: N,N'-bis(salicylaldehyde)-p-phenylenediimine, L: Py, DMSO and DMF). We identified the binuclear structure of these complexes by elemental analysis, IR-spectrum, and T. G. A. According to the results of cyclic voltammetry and DPP measurements in aprotic solvents containing 0.1M TEAP as supporting electrolyte, it was found that diffusionally controlled redox process of two step for one electron was reversible or quasi reversible process in 0.1M TEAP-pyridine and 0.1M TEAP-DMSO solution at mononuclear complexes; [Co(Ⅱ)(SOPD)(L)2]. But, we knew that diffusionally controlled reduction processes of four steps with one electron for binuclear [Co(Ⅱ)2(SMPD)2(L)2] and [Co(Ⅱ)2(SPPD)2(L)2] complexes was Co(Ⅲ)2 e→ Co(Ⅲ)Co(Ⅱ) e→ Co(Ⅱ)2 e→ Co(Ⅱ)Co(Ⅰ) e→ Co(Ⅰ)2 in aprotic solvents.