Solvatochromism studies on UV spectra of 4,5-disubstituted-1,2,4-triazoline-3-thiones
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چکیده
منابع مشابه
Solvatochromism Effect of Different Solvents on UV-Vis Spectra of Flouresceine and its Derivatives
The solvatochromism of fluoresceine and its derivatives was studied in solvents of different Hydrogen Bond Donor (HBD), Hydrogen Bond Acceptor (HBA), Donor Number (DN) and Acceptor Number (AN) by their UV-Vis spectra. Results showed that position, intensity and shape of absorption bands change with type of solvent. These changes can be rationalized by solvatochromic parameters such as ...
متن کاملsolvatochromism effect of different solvents on uv-vis spectra of flouresceine and its derivatives
the solvatochromism of fluoresceine and its derivatives was studied in solvents of different hydrogen bond donor (hbd), hydrogen bond acceptor (hba), donor number (dn) and acceptor number (an) by their uv-vis spectra. results showed that position, intensity and shape of absorption bands change with type of solvent. these changes can be rationalized by solvatochromic parameters such as α, β, et ...
متن کاملAntimicrobial and Hypoglycemic Activities of Novel N-Mannich Bases Derived from 5-(1-Adamantyl)-4-substituted-1,2,4-triazoline-3-thiones
The reaction of 5-(1-adamantyl)-4-ethyl or allyl-1,2,4-triazoline-3-thione with formaldehyde solution and various 1-substituted piperazines yielded the corresponding N-Mannich bases. The newly synthesized N-Mannich bases were tested for in vitro inhibitory activities against a panel of Gram-positive and Gram-negative bacteria and the yeast-like pathogenic fungus Candida albicans. Six compounds ...
متن کاملSynthesis and potential antimycotic activity of 4-substituted-3-(thiophene-2-yl-methyl)-Delta2-1,2,4-triazoline-5-thiones.
In the reaction of hydrazide of thiophene-2-acetic acid (1) with isothiocyanates, the respective thiosemicarbazides 2a-g were obtained. Further cyclization with 2% NaOH led to formation of 4-substituted-3-(thiophene- 2-yl-methyl)-Delta2-1,2,4-triazoline-5-thiones (3a-g). These compounds showed promising antimycotic activity.
متن کاملCrystal structure and UV spectra of a 1,2-disubstituted benzimidazolium chloride
1-(2-Hy-droxy-benz-yl)-2-(2-hy-droxy-phen-yl)-1H-benzimidazol-3-ium chloride, C20H17N2O2+·Cl-, was prepared by reaction of salicyl-aldehyde with o-phenyl-enedi-amine in the presence of tri-methyl-silyl chloride acting as a source of HCl. As a result of steric hindrance, the cation in the crystal is far from planar: the benzimidazole ring system makes dihedral angles of 55.49 (9) and 81.36 (8)° ...
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ژورنال
عنوان ژورنال: Macedonian Journal of Chemistry and Chemical Engineering
سال: 2012
ISSN: 1857-5625,1857-5552
DOI: 10.20450/mjcce.2012.60