Thermodynamics of complexation between haloalcohols and tetrahydrofuran: an indirect approach to assess intramolecular H- bonding in haloalcohols by IR. | [Journal of Chemical Society of Pakistan • 1990]

Author(s):

1. Mansoor Ahmad: National Centre of Excellence, Physical Chemistry, University of Peshawar, Peshawar, Pakistan

2. Shahida Shamim: National Centre of Excellence, Physical Chemistry, University of Peshawar, Peshawar, Pakistan

Abstract:

The proton donor-acceptor complexes formed by 2- haloethanols with tetrahydro-furan in carbontetrachioride solution have been studied. The area of the OH-stretching band corresponding to the intermolecularly H-bonded complexes was plotted against concentration of the THF. From the shape of the curves the relative strength of the intramolecular H-bonds in 2-haloethanols appears to vary in the order F Br CI I. The anamoly in the relative strength of chloro and bromoethanol was checked from the results of complexes formed by 2-CI and 2-Br-ethanol with triethylamine under similar conditions. The order obtained is in agreement that in the case of THF. The equilibrium constants for the 1:1 complexes between alcohols and THF at ambient temperature are in the order, F

Page(s): 301-307

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 12, Issue: 4, Year: 1990

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