Ionization of some derivatives of benzamide, oxamide and malonamide in DMF-water mixture.
The ionization of six compounds of bis-phenolic amides was studied spectrophotochemically in DMF-water mixture. The compounds showed two pK(a) values in the range of 5.97-7.32 for pK(a(1)) and 7.61-8.44 for pK(a(2)). The obtained values of K(a) were normalized using the distribution diagrams of the different species and found to be in the range of 5.81-7.42 for pK(a(1)) and 7.48-8.27 for pK(a2).
Shoukry
A F
AF
Chemistry Department, Faculty of Science, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait.
Shuaib
N M
NM
Ibrahim
Y A
YA
Malhas
R N
RN