Spectroscopic investigation of the donor–acceptor interaction between o-phenylenediamine and tetracyanoethylene in dichloromethane
| Autor: | Amina S. Aljaber, El-Metwally Nour |
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| Rok vydání: | 2008 |
| Předmět: |
o-Phenylenediamine
Tetracyanoethylene Infrared Electrons Electron donor Phenylenediamines Photochemistry Charge-transfer Spectral line Analytical Chemistry chemistry.chemical_compound Nitriles Molecule Instrumentation Spectroscopy Dichloromethane Methylene Chloride Molecular Structure Chemistry Titrimetry Ethylenes Spectra Atomic and Molecular Physics and Optics Spectrophotometry Titration |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 70:997-1000 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2007.08.026 |
| Popis: | The interaction between the electron donor o-phenylenediamine (o-phendn) and the π-acceptor tetracyanoethylene (TCNE) has been investigated spectrophotometrically in dichloromethane at 25 °C. The results indicate that the reaction proceeds via two major steps. The formation of the 1:2 charge-transfer complex [(o-phendn)2, (TCNE)4] in which two o-phenylenediamine molecules undergoes slow N-substitution by one TCNE forming the final reaction product 2,2-di-o-aminoaniline-1,1-dicyanoethylene and 2HCN molecules. The reaction was studied using electronic, infrared, photometric titration and cyclic voltametric measurements. A general mechanism for the reactions is proposed. |
| Databáze: | OpenAIRE |
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