Determination of pKa of ammonium and phenolic groups: Evidence of intramolecular hydrogen bonding in aqueous solution

Ariffin, A. and Khan, M.N. and Sim, Y.L. and Ahmad, W.H.W. (2008) Determination of pKa of ammonium and phenolic groups: Evidence of intramolecular hydrogen bonding in aqueous solution. Indian Journal of Chemistry - Section A Inorganic, Physical, Theoretical and Analytical Chemistry, 47 (2). pp. 240-245. ISSN 0376-4710

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Abstract

The ionization constants of 2-hydroxyanilinium, 2-methoxyanilinium, 4-nitroanilinium ions, N-(2′-hydroxyphenyl)-phthalamic acid and N-(2′-methoxyphenyl) phthalamic acid, determined spectrophotometrically, have been rationalized in terms of internal hydrogen bonding and steric hindrance between o-substituent and reaction site.

Item Type: Article
Additional Information: Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: ionization, 2-hydroxyanilinium, 2-methoxyanilinium, 4-nitroanilinium ions, N-(2′-hydroxyphenyl)-phthalamic acid, N-(2′-methoxyphenyl) phthalamic acid, spectrophotometrically, internal hydrogen bonding, steric hindrance, o-substituent, reaction site.
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Miss Malisa Diana
Date Deposited: 03 Jul 2013 03:46
Last Modified: 11 Dec 2013 06:23
URI: http://eprints.um.edu.my/id/eprint/8065

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