Liquid-liquid Distribution of the Tetravalent Zirconium, Hafnium and Thorium with a New Tetradentate Naphthol-derivative Schiff Base

Abstract

A fundamental study was developed concerning the novel solvent extraction of the tetravalent metal ions; zirconium(IV), hafnium(IV) and thorium(IV). Their extraction behavior in toluene was investigated with a recently synthesized naphthol-derivative Schiff base, 1-(The spectrophotometrical examination of the complex formation between HAPMN and the Zr(IV), Hf(IV) and Th(IV) ions in acetonitrile revealed the formation of stable 1:1 complexes in the solution. After the thorium extraction in toluene, it was found that [Th(OH) 3 HA] was the respective deriving substance. While, in the case of zirconium and hafnium extraction, the extracted adduct was found to be [M 4 (OH) 8 (H 2 O) 16 Cl 6 2HA]. The stoichiometric coefficients of these extracted species were determined by the slope analysis method. The extraction reaction followed a cation exchange mechanism.

A New Schiff Base Derivatives Designed to Bind Metal Ion (Cu, Co): Thermodynamics and Biological Activity Studies

“…The chemistry of (C=N) double bond based complexes plays a vital role in the progress of chemistry and it has been found to possess the pharmacological activities such as malarial [5], anticancer [6], antibacterial [7]. Schiff base appears to be an important intermediate in a number of enzymatic reactions involving interaction of enzyme with an amino or carbonyl group of substitutes [8].…”