Mechanistic study on Thiacloprid (cas 111388-49-9) transformation: Free radical reactions

Add time:09/05/2019    Source:sciencedirect.com

Free radical induced oxidation/reduction mechanisms of the hazardous water contaminant Thiacloprid (cas 111388-49-9) have been unravelled using pulse radiolysis techniques involving transient spectral analysis and redox titration experiments. The OH-induced oxidation of thiacloprid proceeds with appreciable rate, the reaction rate constant has been determined to be kOH = 4.8 × 109 mol−1 L s−1. The OH attack leaves behind a rather complex free radical system consisting of ∼9% α-aminoalkyl radicals, ∼31% aminyl + aminium nitrogen centred radicals, ∼46% radicals at the sulfur and ∼14% hydroxycyclohexadienyl radical of the pyridyl moiety. Since ∼86% of radicals are formed on the key cyanoiminothiazolidine pharmacophore, OH is anticipated to be an appropriate candidate for inactivation of this biologically active pollutant. The one-electron reduction exerted by eaq− occurs at a diffusion controlled rate. As a result of the eaq− attack pyridinyl radical forms that takes part in subsequent protonation and dechlorination processes. The course of events is anticipated to lead to the destruction of another important part of the molecule in respect to insecticidal activity.

We also recommend Trading Suppliers and Manufacturers of Thiacloprid (cas 111388-49-9). Pls Click Website Link as below: cas 111388-49-9 suppliers

Prev:Persistence of Thiacloprid (cas 111388-49-9) and deltamethrin residues in tea grown at different locations of North-East India
Next:Nitrogen-doped graphene quantum dots-based fluorescence molecularly imprinted sensor for Thiacloprid (cas 111388-49-9) detection)