Neelgund GM, Budni ML. 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.
SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2004;
60:1793-1803. [PMID:
15248952 DOI:
10.1016/j.saa.2003.09.017]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2003] [Revised: 08/19/2003] [Accepted: 09/03/2003] [Indexed: 05/24/2023]
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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