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Asian Journal of Research in Chemistry
Year : 2016, Volume : 9, Issue : 11
First page : ( 553) Last page : ( 560)
Print ISSN : 0974-4169. Online ISSN : 0974-4150.
Article DOI : 10.5958/0974-4150.2016.00075.4

Kinetics of oxidation of pentaamminecobalt (III) complexes of α-hydroxy acids by Mn(III)Perchlorate in micellar medium

Palanisamy T.1, Rajkumar P.2,*, Subramani K.3

1PG Department of Chemistry, H.H. The Rajah's College (Affiliated to Bharathidasan University, Tiruchirapalli), Pudukkotai-622001, Tamilnadu, India

2Department of Chemistry, Priyadarshini Engineering College (Affiliated to Anna University, Chennai), Vaniyambadi-635751, Vellore District, Tamilnadu, India

3PG & Research Department of Chemistry, Islamiah College (Affiliated to Thiruvalluvar University, Vellore), Vaniyambadi-635752, Vellore District, Tamilnadu, India

*Corresponding Author E-mail: drprajkumar2014@gmail.com

Online published on 9 March, 2017.

Abstract

The oxidation of pentaamminecobalt(III) complexes of α-hydroxy acids and by Manganese(III) Perchlorate (Mn(III)(ClO4)3) in micellar medium yielding nearly 100% of carbonyl compounds and 100% Co(II) are ultimate products. In this reaction the rate of oxidation shows first order kinetics each in [Co(III)] and [Mn(III)(ClO4)3]. The unbound α-hydroxy acids yield about 100% of carbonyl compounds in presence of micelles. The rate of oxidation of Co(III) complexes of both bound and unbound α-hydroxy acids are enhanced more in the presence of cationic micelle Cetyltrimethylammonium bromide (CTAB), when compared to the anionic micelle of Sodium laurylsulphate (NaLS). The 1 mole of cobalt(III) complexes of α-hydroxy acids reacts with nearly 0.5 mole of Manganese(III) Perchlorate, similarly 1 mole of α-hydroxy acids reacts with nearly 1 mole of Manganese(III) Perchlorate. The reaction goes by free radical mechanism was proved by acrylonitrile polymerization. The appropriate methodology has been inducted.

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Keywords

Manganese(III) Perchlorate (Mn(III)(ClO4)3), α-hydroxy acids, Stoichiometry, Sodium laurylsulphate (NaLS), Cetyltrimethylammonium bromide (CTAB).

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