Abstract
The reaction of the potassium salt of 3-phenyl-5(Z)-(pyridin-2-ylmethylene)-2-thioxoimidazolidin-4-one (KL) with CoCl2·6H2O in MeCN results in formation of the neutral complex CoIIL2. According to single-crystal X-ray analysis, the CoII centre is coordinated to four nitrogen atoms of two organic ligands and has a distorted tetrahedral geometry. This complex undergoes electrochemical reduction with consequent two reversible and one quasi-reversible stages.
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