- 作者: --
- 作者服務機構: Chemistry Department, Faculty of Science, South Valley University, Aswan, Egypt
- 中文摘要: The UV and visible spectra of some arylazo barbituric acids and arylazo pyrimidine in pure and mixed organic solvents of varying polarities have been studied. The different absorption bands displayed in the electronic spectra of these compounds are assigned and the possibility of the existence of these compounds in tautomeric equilibrium as well as in intra- and intermolecular H-bonding were examined. The solute-solvents molecular complexes liable to exist in polar-nonpolar mixed solvents are investigated. The structure of the azo compounds were confirmed by 1H NMR and IR spectroscopy. The ionization processes of the compounds were investigated and the possible ionization constants were determined and discussed in terms of molecular structure of the azo compounds.
- 英文摘要: --
- 中文關鍵字: Spectra; Arylazo barbituric acid; Pyrimidine; Mixed solvents.
- 英文關鍵字: --