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9556275 
Journal Article 
Studies in metal-ligand stability constants of the pyrazoles complexes with some lanthanide metal ions pH-metrically and spectrophotometrically 
Khobragade, VB; Narwade, ML 
2013 
1 
Journal of Chemical and Pharmaceutical Research
ISSN: 0975-7384 
5 
10 
189-193 
English 
Chloro substituted pyrazoles such as 3-(2′-Hydroxy-5′chlorophenyl)-4-(4′-chlorobenzoyl)-5-(4′-N,N-dimethyl aminophenyl)-1-phenyl pyrazole (L1), 3-(2′-Hydroxy-5′chlorophenyl)-4-(4′-chlorobenzoyl)-5-(3′,5′-dimethoxy-4′-hydroxy phenyl)-1-phenyl pyrazole (L2) and 3-(2′-Hydroxy-3′nitro-5′-methylphenyl)-4-(4′-chlorobenzoyl)-5-(4′-N,N-dimethyl aminophenyl)-1-phenyl pyrazole (L3) are synthesized in laboratory. The interaction of the above substituted pyrazoles have been studied with Nd (III), Pr(III)and Sm(III) and Metal -ligand stability constants have been evaluated in 70 % dioxane-water mixture at 0.1 ionic strength. 
Antibiotic drugs; Dioxane; Lanthanide metal ions