Redox reactions of cobalt (III) complexes of α-hydroxy acids by pyrazinium chloro chromate in the presence of Surfactant

Z. Ayesha siddiqha¹, B. Mohammed Nawaz²*
¹Assistant Professor, Department of Chemistry, Vels University, Chennai, India
²Associate Professor, Department of Chemistry, Islamiah College, Vaniyambadi, India

A B S T R A C T
The kinetics of one electron transfer route seems to be unavailable for Pyrazinium Chloro Chromate (PyzCC) with cobalt (III) bound and unbound complexes of α-hydroxy acids in surfactant medium. PyzCC oxidizes cobalt (III) bound and unbound α-hydroxy acids. It rules out the synchronous C-C bond fission and electron transfer to cobalt (III) centre. Oxidation of above complexes increases with increase of temperature. With increase in surfactant concentration an increase in the rate is observed. The added Ammonium Lauryl sulphate (ALS) surfactant enhances the rate of oxidation of a reaction much more than without micelle. Similar trends have been observed in lactate, mandelato and glycolato CO (III) complexes.
Keywords: Pyrazinium Chloro Chromate, Ammanium lauryl sulphate.