Determination of pKa of ammonium and phenolic groups: Evidence of intramolecular hydrogen bonding in aqueous solution
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-sub...
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Main Authors: | , , , |
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Format: | Article |
Published: |
2008
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Subjects: | |
Online Access: | http://eprints.um.edu.my/8065/ http://www.scopus.com/inward/record.url?eid=2-s2.0-42249106609&partnerID=40&md5=69a41b4e053dbf274c0d355ae8e8d042 |
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Summary: | 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. |
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