Electrochemical Behaviour of Chloride and Bromide Complexes of Palladium(II) with 4-Amino-6-methyl-3-thio-3,4-dihydro-1,2,4-triazin-5(2H)-one in Dimethylformamide at Glassy Carbon Electrode

• Autorzy: Fotouhi, L. , Ghassemzadeh, M. , Heravi, M. M.
• Języki publikacji: EN

Abstrakty

EN

The electrochemical behaviour of palladium(II) complexes of PdCl2L(I) and PdBr2L(II) (L = 4-amino-6-methyl-3-thio-3,4-dihydro-1,2,4-triazin-5(2H)-one) has been investigated in dimethylformamide at glassy carbon electrode. Under cyclic voltammetric conditions, complex PdCl2L is found to undergo a one-electron oxidation at 1.27 V with a prewave, which is similar to oxidation of ligand L. The oxidation of ligand shows an oxidation wave at 1.25 V with EC mechanism. In the chemical reaction following the one electron irreversible oxidation of ligand, the electrochemical-generated cation radical forms a dimer, which is reduced at reverse scan at -0.66 V to reproduce the monomer. Thus, the nature of oxidation of both complexes I and II suggests a ligand-centered oxidation, because their oxidation behaviour is similar to oxidation of ligand L. However, the reduction of both complexes I and II shows a reduction peak at -1.31 V and -1.33 V respectively, which is related to reduction of metal center of complexes, Pd (II) to Pd (I).

Słowa kluczowe

EN

palladium(II); triazine; electrochemistry; oxidation; reduction

• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2003
• Tom: Vol. 77 / nr 7
• Strony: 895-902
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Fotouhi, L.

• Department of Chemistry, Faculty of Science, Alzahra University, P.O. Box 1993891176, Tehran, Iran

autor

Ghassemzadeh, M.

• Chemistry &Chemical Engineering Research Center of Iran, Tehran, Iran

autor

Heravi, M. M.

• Department of Chemistry, Faculty of Science, Alzahra University, P.O. Box 1993891176, Tehran, Iran

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