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Document Details
Document Type
:
Article In Journal
Document Title
:
Acid Dissociation Constants and The Conformations of 2-Furfural and 2- Thiophene Aldehyde Benzenesulphonylhyd~azones
ثابت التفكك الحامضي والشكل الفراغيي لمركبات 2- فيرفورال ، و 2-ثيوفين ألدهايد بنزين سلفونيل هيدرازون
Subject
:
Chemistry
Document Language
:
English
Abstract
:
Acid dissociation constants, pK., of 2-furfural benzene-sulphonylhydrazone, (1) and 2-thiophene aldehyde benzenesulphonylhydrazone, (2) have been determined spectrophotometrically in ethanol-water media of various composition over the temperature range 15-40°C. The results were used to calculate the enthalpy ~H and the entropy ~S for the ionization process. The slight difference observed between the pK. values of the studied compounds (1) and (2) revealed that the ring heteroatom is not involved in the formation of hydrogen-bonded chelate ring. This was confirmed by dipole moment, IR, and NMR spectral measurements.
ISSN
:
1012-1319
Journal Name
:
Science Journal
Volume
:
7
Issue Number
:
1
Publishing Year
:
1415 AH
1995 AD
Number Of Pages
:
7
Article Type
:
Article
Added Date
:
Sunday, October 11, 2009
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
عبدالجواد علي فهمي
ABDELGAWAAD. A. FAHMI
Researcher
جمال سعد
GAMAL R. SAAD
Researcher
Files
File Name
Type
Description
22592.pdf
pdf
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