Hydrophobic hydration of some different types of quaternary ammonium bromides in mixtures of water andN,N-dimethylformamide |
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| Authors: | Wim J M Heuvelsland Cees de Visser Gus Somsen Antonio LoSurdo Wen-Yang Wen |
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| Institution: | (1) Department of Chemistry, Free University, de Boelelaan 1083, Amsterdam, The Netherlands;(2) Jeppson Laboratory, Department of Chemistry, Clark University, 01610 Worcester, Massachusetts;(3) Present address: Rosenstiel School of Marine and Atmospheric Science, University of Miami, 33149, Florida |
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| Abstract: | Enthalpies of solution of methyltributylammonium bromide, tetraethanolammonium bromide, and three azoniaspiroalkane bromides in binary solvent mixtures of water and N,N-dimethylformamide have been measured calorimetrically at 298.15oK over the whole mole fraction range. The results are interpreted in terms of a simple hydration model with two parameters and compared with those of the corresponding tetraalkylammonium bromides. Enthalpic studies with different types of quaternary ammonium bromides are useful in reexamining the assumptions and limitations of the hydration model. |
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| Keywords: | Enthalpies of solution hydrophobic hydration quaternary ammonium bromides solvent mixtures water and DMF |
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