Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 10049-08-8, Cl3Ru. A document type is Article, introducing its new discovery., COA of Formula: Cl3Ru
A simple, rapid and sensitive spectroscopic method for the kinetics of Ru(III) catalysed oxidation of phenthyl alcohol(PA) by Ce(IV) in aqueous nitric acid medium has been reported under varying conditions. The reaction is followed spectrophotometrically by measuring the decrease in absorbance of Ce(IV) at 350 nm. The rates show first order dependence on [Ce(IV)] and the rate constants evaluated at different [Ce(IV)] are found to be almost the same. Increase in [Ru(III)] has linear relation with the rate of oxidation and order in [Ru(III)] has been found to be fractional. Variation in ionic strength of the medium has significant effect on the rate of reaction. The rates of the reaction have been measured at different temperatures and the activation parameters for all the substrates computed. The rates decrease in the order – OCH3> -CH3 > -H>-Cl>-NO2 of para substituted phenethyl alcohols. Hammett’s plot of log kobs versus sigma is found to be valid. The correlation between enthalapies and free energies of activation is reasonably linear with an isokinetic temperature of 425K. The rate constant k obeys corresponding equation, k=Q.e-DeltaE#RT,e DeltaS#/R Ea increases with introduction of electron-withdrawing groups into the benzene ring. The introduction of electron-releasing groups lowers the Ea for the reaction. Similarly, logA decreases with substitution of electron-withdrawing groups and increases with substitution of electron-releasing groups. A plausible mechanism consistent with the experimental results has been proposed.
Interested yet? Keep reading other articles of 10049-08-8!, COA of Formula: Cl3Ru
Reference:
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI