Abstract

DETERMINATION OF FORMATION CONSTANT OF PARAQUAT(PQ) WITH ORGANIC DONORS CT COMPLEXES IN SDS MEDIUM

Dr. T. Charan Singh*

Abstract

Molecular complexes of Paraquat (PQ) with a few Organic donors viz. p-hydroxy Phenyl hydrazone p-chloro Phenyl hydrazone and m-methyl Aniline in Sodium Dodecyl Sulfate (SDS) micellar medium have been studied spectrophotometrically. The entire complexes exhibit one charge transfer band each in the region where neither of the components has any absorption. The formation constants of the complexes have been determined by using Fronasiero and Grieser method. The extinction coefficients (ε) and apparent formation constant of CT complexes have been determined by Rose-Drago method. The positions of the CT-Bands in surfactant (SDS) are close to those of the CT-Bands in methanol. The substituents in donor produced changes in the positions in the CT-Bands.

Keywords: Paraquat, Sodium Dodecyl Sulfate (SDS), Micellar Medium, p-hydroxy Phenyl hydrazone, p-chloro Phenyl hydrazone and p-methyl Aniline.