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Keywords = 2-arylazo-5-aryl-1,3,4-thiadiazoles

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17 pages, 2096 KB  
Article
1,3,4-Thiadiazole-Containing Azo Dyes: Synthesis, Spectroscopic Properties and Molecular Structure
by Agnieszka Kudelko, Monika Olesiejuk, Marcin Luczynski, Marcin Swiatkowski, Tomasz Sieranski and Rafal Kruszynski
Molecules 2020, 25(12), 2822; https://doi.org/10.3390/molecules25122822 - 18 Jun 2020
Cited by 35 | Viewed by 7811
Abstract
Three series of azo dyes derived from 2-amino-5-aryl-1,3,4-thiadiazoles and aniline, N,N-dimethylaniline and phenol were synthesized in high yields by a conventional diazotization-coupling sequence. The chemical structures of the prepared compounds were confirmed by 1H-NMR, 13C-NMR, IR, UV-Vis spectroscopy, mass spectrometry [...] Read more.
Three series of azo dyes derived from 2-amino-5-aryl-1,3,4-thiadiazoles and aniline, N,N-dimethylaniline and phenol were synthesized in high yields by a conventional diazotization-coupling sequence. The chemical structures of the prepared compounds were confirmed by 1H-NMR, 13C-NMR, IR, UV-Vis spectroscopy, mass spectrometry and elemental analysis. In addition, the X-ray single crystal structure of a representative azo dye was presented. For explicit determination of the influence of a substituent on radiation absorption in UV-Vis range, time-dependent density functional theory calculations were performed. Full article
(This article belongs to the Special Issue Exclusive Feature Papers in Colorants)
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