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Electrochemical reduction of 3-methyl-1-phenyl-3-hydroxytriazene and its copper complex
Gupta, Manu,Hemlata,Karnawat, Romila,Verma
, p. 1525 - 1530 (2013/02/23)
3-Methyl-1-phenyl-3-hydroxytriazene (MPHT) and its Cu complex were synthesized, purified and characterized by spectral techniques. The electrochemical reduction of MPHT was studied in aqueous methanolic solution containing BR buffer using DC-polarography and cyclic voltammetry. The DC-polarogram and cyclic voltammograms displayed only one reduction wave. The kinetic parameters have been evaluated. The cyclic voltammetric data reveals that the reduction is irreversible and follows an EC mechanism involving transfer of six electrons. Constant current electrolysis of MPHT was carried out using stainless steel electrode. The products of electro-reduction were isolated, purified and then characterized by spectroscopic methods. The proposed mechanism is given for electro-reduction of MPHT in acidic, aqueous and alkaline medium. The voltammetric studies of Cu complex of MPHT at Pt electrode in CH2CI2 shows one electron quasi-reversible electrode process.