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 TypeDr GradeEmail
عبدالجواد علي فهمي ABDELGAWAAD. A. FAHMIResearcher  
جمال سعدGAMAL R. SAADResearcher  

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