Solvation Behaviour of N-Chlorosuccinimide Species in Water + Methanol

J. Ishwara Bhat* and N. S. Shreevaraprasad

Department of Chemistry, Mangalore University, Mangalagangothri- 574 199 (India)

The present paper reports the effect of solvation of the species N-chlorosuccinimide (NCS) on its electrical conductivity behaviour. The study was carried out in water and various compositions (V/V) of water + methanol between 283 to 323 K. Electrical conductivity data were analysed initially by DHO and then by Shedlovsky model to get the limiting molar conductance (l0m). The l0m was found to decrease with the increase in methanol indicating the increased ion-solvent interaction and solvent-solvent interactions and also the preferential solvation. The association constant was found to be very high in the case of water and decreased sharply in presence of methanol. Thermodynamic parameters of solvation was determined and presented here. Preferential solvation of the cation by methanol is identified. The system appears to be exothermic.

Solvation behaviour; N-Chlorosuccinimide