Synthesis, Characterization and Solvent Effects on the Electronic Absorption Spectra of Aminopyridine Schiff Bases

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dc.contributor.authorDueke-Eze, C.U.
dc.contributor.authorFasina, T.M.
dc.contributor.authorMphahlele, M.J.
dc.date.accessioned2019-09-05T16:20:10Z
dc.date.available2019-09-05T16:20:10Z
dc.date.issued2013-11
dc.description.abstractSix Schiff bases, namely, N-(2-hydroxylbenzylidene)pyridine-4-amine (IA), N-(2-hydroxylbenzylidene)pyridine-2-amine (IB), N-(5- nitro-2-hydroxylbenzylidene)pyridin-4-amine (IIA), N-(5-nitro-2-hydroxylbenzylidene)pyridin-2-amine (IIB), N-(5-bromo-2- hydroxylbenzylidene)pyridin-4-amine (IIIA) and N-(5-bromo-2-hydroxylbenzylidene)pyridin-2-amine (IIIB) derived from condensation reactions of 4-aminopyridine or 2-aminopyridine with salicylaldehye, 5-nitrosalicylaldehye and 5-bromosalicylaldehye were synthesized and characterized using elemental analysis, IR, NMR and Raman spectroscopic techniques. The effect of solvent on the electronic absorption spectra was examined in five solvents of different polarities, namely, 1,4-dioxane, chloroform, ethanol, acetonitrile and N,Ndimethyl formamide. The bands involving different electronic transitions were interpreted and regression coefficients calculated for the absorption band involving intermolecular charge transfer transition within the whole Schiff base molecule using an equation that relates the absorption maxima to empirical solvent parameters that depend on the dielectric constant, refractive index and hydrogen bonding ability of the solvents.en_US
dc.identifier.citationDueke-Eze, Cordelia & Fasina, Tolu & Mphahlele, Malose J. (2013). Synthesis, Characterization and Solvent Effects on the Electronic Absorption Spectra of Aminopyridine Schiff Bases. Asian Journal of Chemistry. 25. 8505-8508. 10.14233/ajchem.2013.14805.en_US
dc.identifier.issn8505-8508
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/5307
dc.language.isoenen_US
dc.publisherAsian Journal of Chemistryen_US
dc.relation.ispartofseries;Vol. 25, No. 15 (2013)
dc.subjectSchiff basesen_US
dc.subject2-Aminopyridineen_US
dc.subject4-Aminopyridineen_US
dc.subjectSolvent effecten_US
dc.subjectElectronic spectraen_US
dc.titleSynthesis, Characterization and Solvent Effects on the Electronic Absorption Spectra of Aminopyridine Schiff Basesen_US
dc.typeArticleen_US
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