Turkish Journal of Chemistry
Abstract
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, $^{1}$H NMR, $^{13}$C 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.
DOI
10.3906/kim-1701-50
Keywords
Formazans, UV-visible absorption spectroscopy, substituent effect, solvent effect, density functional theory (DFT)
First Page
710
Last Page
727
Recommended Citation
TÜRKOĞLU, G, & ÇINAR, M. E (2017). Experimental and computational studies on the absorption properties of novel formazan derivatives. Turkish Journal of Chemistry 41 (5): 710-727. https://doi.org/10.3906/kim-1701-50
