Interaction of 2,3-dichloro-1,4-naphthoquinone with n-butylamin in halocarbon solvents

Neelgund, Gururaj M and Budni, ML (2005) Interaction of 2,3-dichloro-1,4-naphthoquinone with n-butylamin in halocarbon solvents. In: Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 61 (8). pp. 1729-1735.

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Abstract

The rapid interaction between 2,3-dichloro-1,4-naphthoquinone (DCINQ)and n-butylamine results in the formation of 2N(n-butylamino)-3-chloro-1,4-naphthoquinone as the final product, The reaction is found to proceed through the initial formation of charge-transfer (CT) complex as an intermediate. The final product of the reaction has been isolated and characterized using FTIR, H-1 and C-13 NMR spectroscopy, mass spectrometry, and elemental analysis. The rate of formation of product has been measured as a function of time in different halocarbon solvents, viz., chloroform, dichloromethane and 1: 1 (v/v) mixture of two solvents. The pseudo first order and second order rate constants at various temperatures for the transformation process were evaluated from the absorbance time data. The activation parameters (E,, AS', Delta H-#and Delta G(#)) were obtained from temperature dependence of rate constants. The influence of dielectric constant on the properties of reaction was discussed and the probable course of reaction ispresented.

Item Type:	Journal Article
Publication:	Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
Publisher:	Pergamon-Elsevier Science Ltd
Additional Information:	Copyright for this article belongs to Elsevier.
Keywords:	2,3-Dichloro-1,4-naphthoquinone (DClNQ);n-Butylamine;Charge-transfer complex;Spectroscopic;Kinetics
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	06 Jul 2005
Last Modified:	19 Sep 2010 04:19
URI:	http://eprints.iisc.ac.in/id/eprint/3315

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