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Effect of Hydrogen Bonding and Solvation of 5-Substituted Indole Carboxldehydes in Methanol-Benzene

Author Affiliations

  • 1Research Laboratory, S. D. Govt. College, Beawar, 305901, Rajasthan, INDIA

Res.J.chem.sci., Volume 1, Issue (9), Pages 11-16, December,18 (2011)


Effect of hydrogen bonding of 5-substituted indole carboxaldehyde has been investigated by viscometric measurement. The viscosity of the system increases with the increase in concentration. The Trend Change Point (TCP) values have been determined by intersection of two straight lines, which are found to be dependent on the composition of solvent mixtures. The study confirms that the nature of synthesized compounds forms clusters in methanol-benzene mixture. The viscometric data have been analyzed in terms of Einstein, Vand, Moulik and Jones-Dole equations. These well known equations have been successfully applied to explain the results of viscosity measurements and the viscometric parameters show that the behavior of compound changes in alcohol-benzene. These results show that the formation of cluster depends on the methanol concentration. This indicates that the observed methanol concentration effect on the formation of clusters interferences in formation of hydrogen bonding of methanol with molecule.


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