Synthesis and crystal structures of two hetarylazo indole disperse dyes

Seferoglu Z. , Tokay N. , Hoekelek T., ŞAHİN E.

STRUCTURAL CHEMISTRY, cilt.19, ss.559-564, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 19 Konu: 4
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1007/s11224-008-9325-8
  • Sayfa Sayıları: ss.559-564


Two new heterocyclic monoazo disperse dyes were prepared by diazotizing 2-amino-5-methylthiazole and ethyl-1-(2-aminothiazol-4-yl)acetate and coupling with 1,2-dimethyl-indole. Characterization of the dyes was carried out by using UV-vis, FTIR, (1)H-NMR and MS spectroscopic techniques. The structures of the dyes have been determined by single-crystal X-ray diffraction method. The maximum absorption peaks (lambda(max)) in the ultraviolet and visible (UV-vis) spectra of the hetarylazoindole dyes have been determined by using the density-functional (DFT method) and time-dependent density-functional (TD-DFT method) theories. Excellent agreement was found between the calculated and experimental lambda(max) values.