Abstract

R. P. Pawar, M. L. Narwade and M. M. Chincholkar

The interaction of Sr(ll), Ba(II), Ni(ll). Cu(ll), Cd(ll), Pb(II), and U02(ll), metal ions with 1-carboxamido-3-{2-hydroxy-5-methylphenyl)-5-phenyl-Δ2pyrazoline (ligand 1) and 1 -carboxamido-3-(2-hydroxy-3-bromo-5-methylphenyl)-5-phenyl-Δ2-pyrazoline (ligand 2) have been investigated by * pH metric techniques at 0.1 M ionic strength and at 27± 0.1 °C in 70% methanol-water mixture; The data obtained were used to compare and evaluate the values of proton-ligand stability constants (pk) and metal ligand stability constants (log k) proton-ligand and metal-ligand stability constants have been determined by Bjerrum method, it is observed that Sr(ll), Ba(ll), Ni(ll), Cu(ll), Cd(ll), Pb(II), and U02(ll), metal ions forms 1:1 and 1:2 complexes with both ligands.

Techniques; Proton-ligand; Determined

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