Synthesis, spectroscopic and electrochemical studies on bis-[1,3-substituted (Cl, Br) phenyl-5-phenyl formazanato]nickel(II) complexes.
In this study, new 1:2 Ni complexes of 1,3-substituted phenyl-5-phenylformazans were synthesized with -Cl, -Br substituents in the o-, m-, p-positions of the 1-phenyl ring and -NO2 group in the m-position of the 3-phenyl ring. Their structures were elucidated and spectral behaviors were investigated with the use of elemental analysis, GC-Mass, 1H NMR, 13C NMR, FTIR, UV-vis spectra. Furthermore electrochemical properties such as number of electrons transferred (n), diffusion coefficients (D) and possible reaction mechanism of the compounds were determined with the use of cyclic voltammetry, ultramicrodisc electrode and chronoamperometry. The relation between their absorption properties and electrochemical properties was examined. A linear correlation was obtained between Hammett substituent coefficients with lambda(max) values.
Department of Chemistry, Faculty of Gazi Education, Gazi University, Teknikokullar, 06500 Ankara, Turkey. habibe@gazi.edu.tr
Habibe
H
Tezcan
Elif
E
Uzluk
M Levent
ML
Aksu
D001372:Aza Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D017605:Bromine Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D017606:Chlorine Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D004563:Electrochemistry; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry*; D010084:Oxidation-Reduction; D013053:Spectrophotometry
D001372:Aza Compounds; D017605:Bromine Compounds; D017606:Chlorine Compounds; D009532:Nickel