Synthesis, characterization, tautomerism and theoretical study of some new Schiff base derivatives
| Autor: | Gulsen Turkoglu, Cemil Öğretir, Hakan Dal, Halil Berber |
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| Přispěvatelé: | Anadolu Üniversitesi, Fen Fakültesi, Fizik Bölümü, Berber, Halil, Dal, Hakan |
| Rok vydání: | 2011 |
| Předmět: |
Models
Molecular Magnetic Resonance Spectroscopy Spectrophotometry Infrared Characterization Enthalpy Ether Aminophenols Analytical Chemistry Synthesis chemistry.chemical_compound symbols.namesake Pm6 Method Spectroscopy Fourier Transform Infrared Polymer chemistry Schiff Basel Theoretical Calculation Organic chemistry Instrumentation Schiff Bases Spectroscopy Aldehydes Schiff base Molecular Structure Models Theoretical Carbon-13 NMR Tautomer Atomic and Molecular Physics and Optics Standard enthalpy of formation Gibbs free energy Salicylaldehyde chemistry symbols Spectrophotometry Ultraviolet Tautomerism |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 79:1573-1583 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2011.04.089 |
| Popis: | WOS: 000293363000108 PubMed ID: 21641858 New Schiff base derivatives were prepared by the condensation of 5-chloro and 5-bromo salicylaldehyde with bis(o-aminophenol)ethers. Five bis(o-nitrophenol)ether compounds were synthesized using some ditosylate, 1,3-dibromopropane and 1,4-dibromobuthane with o-nitrophenol. These compounds were reduced to bis(o-aminophenol)ethers. The products have been characterized by elemental analysis, FTIR, (1)H, (13)C NMR, HETCOR and HMBC spectroscopic techniques. The tautomerisms of all of the Schiff bases compounds were determined in DMSO, CHCl(3), C(2)H(5)OH and C(6)H(12) solvents and in both acidic and basic media using the UV-vis spectrophotometric method. The heat of formation (Delta H(f)),enthalpy (Delta H), entropy (Delta S). Gibbs free energy (Delta G(f) and Delta G), stable isomers, conformations and tautomers of the synthesized compounds are calculated using the MOPAC2009 (PM6) program |
| Databáze: | OpenAIRE |
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