Experimental and computational studies on the absorption properties of novel formazan derivatives

WOS: 000415108300009
Eight novel 3-(4-(benzyloxy)phenyl)-5-(4-bromophenyl)-1-(4-substituted-phenyl)formazan (4a 4h) were synthesized by coupling of substituted phenylhydrazones with diazonium salts of 4-bromoaniline. The substituted phenylhydrazones, which are intermediate products, were obtained from the condensation of substituted phenylhydrazines with 4-(benzyloxy)benzaldehyde. All target compounds were characterized by using FTIR, H-1 NMR, C-13 NMR, LC-MS spectrometry, and elemental analysis. Absorption spectra of these compounds in solvents with different polarities were investigated thoroughly. Time-dependent density functional theory (TD-DFT) studies were conducted to shed light on their electronic structures, Kohn-Sham orbitals, and electronic transitions.
Anadolu University Research Council
GT would like to express her deep thanks to Asst Prof Halil Berber, Faculty of Science, Department of Chemistry, Anadolu University, for his kind advice and valuable help. GT is grateful to Anadolu University Research Council for its financial support. We are indebted to the High-Performance-Computing (HPC) Linux Cluster HorUS of the University of Siegen for the computer time provided.