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Heat of solution of 15-crown-5 ether in the mixtures of water with DMSO, DMF, DMA and HMPA at 298.15K

✍ Scribed by Malgorzata Jóźwiak; Henryk Piekarski

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 405 KB
Volume: 81
Category: Article
ISSN: 0167-7322
DOI: 10.1016/s0167-7322(99)00032-x

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✦ Synopsis

Enthalpies of solution of 15-crown-5 ether in dimethylsulfoxide-water, N,Ndimethylformamide-water, N,N-dimethylaeetamide-water, and hexamethylphosphoramidewater systems have been measured at 298.15K. The plot of enthalpy of solution of 15C5 in these mixtures exhibits maximum at x w ~ 0.5 for DMSO and DMA, x w e 0.4 for DMF, x w 0.7 for HMPA, respectively. The results were discussed on the basis of the ,,cage model" of hydrophobic hydration.

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