International Journal of Innovative Research and Development

Abstract

The interaction of Sm (III) and ND (III) metal  ions with  3-Bromo-2-hydroxy-5-Methyl  chalcone (L1) and 3-Bromo-(2-hydroxy-5-methyl benzoyl) -4-phenyl-1, 3-butadine chalcones (L2) have been studied in 0.1M ionic strength at 70% Dioxane-water mixture by Bjerrum method as adopted by Calvin and Wilson. It is observed that Sm(III) and Nd(III) metal ions from 1:1 and 1:2 complexes with ligands (L1 & L2). The data obtained were used to estimate and compare the values of proton-ligand stability constant (pk) and metal-legand stability constants (logK). The effect of substituents was studied from estimated data (pK & logK).

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Abstract

Ultrasonic velocity and density measurement of chalcone - 3-bromo-2-hydroxy-5- methyl-4-chloro chalcone (3B2H5M4C1C) in dioxane-water mixture have been carried out in the concentration range 1x10^-2 - 5x10^-2 mole dm^-3 and in different percentages of dioxane-water mixtures. The experimental data have been used to calculate various acoustical parameters such as adiabatic compressibility (β_s), apparent molal volume (ϕ_v), apparent molal compressibility (ϕ_k(s)), intermolecular free length (L_f), specific acoustic impedence (Z_s) and relative association (R_A). The results have been interpreted in terms of solute-solvent and solute-solute interactions.

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