Electron donor-acceptor complexes of 2,3-dichloro-5-nitro-1,4-naphthoquinone with some methyl substituted anilines: formation of 1:2 (A:D) complexes |
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Authors: | Neelgund Gururaj M Budni M L |
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Affiliation: | P.G. Department of Studies in Chemistry, Karnatak University, Dharwad-580003, India. gneelgund@yahoo.com |
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Abstract: | The donor-acceptor complexes between 2,3-dichloro-5-nitro-1,4-naphthoquinone (DClNNQ) and some methyl substituted anilines were investigated by spectrophotometric method. This investigation was carried out in three different chlorinated solvents viz., chloroform, dichloromethane and 1,2-dichloroethane. Experimental evidences shows the formation of 1:2 (A:D) complexes but not 1:1 complexes. The calculated values of the oscillator strength and transition moment confirms this suggestion. The stoichiometry of the complexes was unaffected by the variation of temperature over a small interval and also change in solvent. The thermodynamic and spectroscopic parameters were evaluated in all the three solvents for the formation of CT-complexes. The influence of used solvents on the thermodynamic and spectroscopic parameters was investigated. The strength of the donors was also investigated. |
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