Kinetics of rhodium(III) -Catalysed oxidation of some aromatic aldehydes by diperiodatocuprate (III) in aqueous alkaline medium Chandar M. Ravi*, Prasad T. Ravi1, Reddy K. Nagi2, Reddy P. Kondal3 Department of Metallurgy & Materials Technology, Mahatma Gandhi Institute of Technology, Gandipet, Hyderbad – 500 075 (A.P), India 1Director, Dravidian University, Kuppam, Ananthapur Dist. (A.P), India 2Associate Professor, CBIT, Gandipet, Hyderbad. (A.P), India 3Principal, Govt.Degree College, Godavari Khani, Karimnagar Dist. (A.P), India *Email: rcmaroju@gmail.com
Online published on 22 February, 2013. Abstract Graphical Abstract Abstract Rhodium(III)Chloride catalyzed oxidation of some aromatic aldehydes by Diperiodatocuprate(III) (DPC) in aqueous alkaline medium has been studied spectrophotometrically at 414nm. The order in [DPC] is zero and one each in [Rh(III)] and [aldehyde]. No salt effect and [OH −] effect have been found on the rate of oxidation. The stoichiometric studies reveal that one mole of aldehyde consumes two moles of DPC giving the corresponding carboxylic acid as the reaction product. A direct reaction between Rh(III) and aldehyde to give product via hydride ion abstraction by Rh(III) has been proposed. Top Keywords Aromatic aldehydes, Rh(III)-catalysed oxidation, Rh(III)Chloride, DPC, Carboxylic acids, Hydride ion abstraction. Top |