Electrochemical investigation of 1,3,5-triphenylformazan and its nitro derivatives in dimethyl sulfoxide.
Cyclic voltammetric (CV) and chronoamperometric (CA) behaviors of 1,3,5-triphenylformazan (TPF), 3-(p-nitrophenyl)-1,5-diphenylformazan (PNF) and 3-(m-nitrophenyl)-1,5-diphenylformazan (MNF) were studied in dimethyl sulfoxide medium. TPF was found to give a single sharp cathodic CV peak corresponding to a gain of one-electron per molecule. The diffusion coefficient and the number of electrons transferred were calculated using the Baranski equation with the CV-data obtained by an ultramicroelectrode. Standard rate constants for the reduction were calculated by the Klingler-Kochi technique. The electrochemical data obtained support the mechanism proposed by Umemoto.
Gökce
Giiltekin
G
Department of Chemistry, Faculty of Science, Ankara University, Ankara, Turkey.
Durmuş
Zehra
Z
Tezcan
Habibe
H
Kiliç
Esma
E
Yilmaz
Hamza
H
D004058:Diffusion; D004121:Dimethyl Sulfoxide / Q000737:chemistry*; D004563:Electrochemistry; D004566:Electrodes; D005562:Formazans / Q000737:chemistry*; D009574:Nitro Compounds / Q000032:analysis*; D012997:Solvents
C510333:1,3,5-triphenylformazan; D005562:Formazans; D009574:Nitro Compounds; D012997:Solvents; D004121:Dimethyl Sulfoxide