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Research Journal of Science and Technology
Year : 2017, Volume : 9, Issue : 2
First page : ( 249) Last page : ( 252)
Print ISSN : 0975-4393. Online ISSN : 2349-2988.
Article DOI : 10.5958/2349-2988.2017.00045.6

Spectrophotometric study of Stability Constants of 2z-2-Benzylidenehydrazinecarbothioamide-Mn Schiff Base Complex at Different Temperatures

Eberendu K.O*

Department of Chemistry, Michael Okpara University of Agriculture, Umudike, Abia State Nigeria

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

Online published on 18 September, 2017.

Abstract

Schiff base ligands have structures which enable them to act as chelating agents. The formation of Mn(III) complex with 2z-2-benzylidenehydrazinecarbothioamide has been studied spectrophotometrically at an absorption maximum of 635 nm at different temperatures. The data show that Mn(III) and 2z-2-benzylidenehydrazinecarbothioamide combine in the molar ratio of 1: 3. The stability constants of the complex were calculated to be 6.70 x 1014, 5.60 x1014 and 1.16 x 1014, 4.30 x 1014 by continuous variation method and mole ratio method at 25°C and 40°C respectively. The immediately formed complex shows stability with respect to temperature.

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Keywords

Stability constant, 2z-2-benzylidenehydrazinecarbothioamide, Schiff base, manganese complex, Spectrophotometric studies, manganous carbonate, continuous variation method and mole ratio method.

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