Nonenzymatic NADH-Dependent Reduction of Keggin-Type 12-Tungstocobaltate(III) in Aqueous Medium

Nonenzymatic NADH-Dependent Reduction of Keggin-Type 12-Tungstocobaltate(III) in Aqueous Medium

The kinetics of the electron transfer reaction of NADH with 12-tungstocobaltate(III) has been studied over the range 5.07 ≤ 104 [NADH] ≤ 15.22 mol dm-3, 7.0 ≤ pH ≤ 8.0 and 20 ≤ t ≤ 35 oC in aqueous medium. The electron transfer reaction showed first-order dependence each in [NADH]T and [12-tungstoco...

Full description

Bibliographic Details
Main Authors: Prabla Kumari, Alaka Das, Dillip Kumar Baral, A. K. Pattanaik, P. Mohanty
Format: Article
Language:English
Published: Hindawi Limited 2011-01-01
Series:E-Journal of Chemistry
Online Access:http://dx.doi.org/10.1155/2011/341865
id doaj-e8d9cbd149724a3d85322ed359c01e7c
record_format Article
spelling doaj-e8d9cbd149724a3d85322ed359c01e7c2020-11-25T01:57:11ZengHindawi LimitedE-Journal of Chemistry0973-49452090-98102011-01-01831152115710.1155/2011/341865Nonenzymatic NADH-Dependent Reduction of Keggin-Type 12-Tungstocobaltate(III) in Aqueous MediumPrabla Kumari0Alaka Das1Dillip Kumar Baral2A. K. Pattanaik3P. Mohanty4Department of Chemistry, Utkal University, Bhubaneswar, 751004, Orissa, IndiaDepartment of Chemistry, Utkal University, Bhubaneswar, 751004, Orissa, IndiaDepartment of Chemistry, Utkal University, Bhubaneswar, 751004, Orissa, IndiaDepartment of Chemistry, Khalikot Autonomous College, Berhampur, IndiaDepartment of Chemistry, Utkal University, Bhubaneswar, 751004, Orissa, IndiaThe kinetics of the electron transfer reaction of NADH with 12-tungstocobaltate(III) has been studied over the range 5.07 ≤ 104 [NADH] ≤ 15.22 mol dm-3, 7.0 ≤ pH ≤ 8.0 and 20 ≤ t ≤ 35 oC in aqueous medium. The electron transfer reaction showed first-order dependence each in [NADH]T and [12-tungstocobaltate(III)]T. The products of the reaction were found to be NAD+ and 12-tungstocobaltate(II). The activation parameters ΔH# (kJ mol-1) and ΔS# (JK-1mol-1) of the electron transfer reactions were found to be 64.4±1.8 and -48.86±6.0. Negative value of ΔS# is an indicative of an ordered transition state for the electron transfer reaction.http://dx.doi.org/10.1155/2011/341865
collection DOAJ
language English
format Article
sources DOAJ
author Prabla Kumari
Alaka Das
Dillip Kumar Baral
A. K. Pattanaik
P. Mohanty
spellingShingle Prabla Kumari
Alaka Das
Dillip Kumar Baral
A. K. Pattanaik
P. Mohanty
Nonenzymatic NADH-Dependent Reduction of Keggin-Type 12-Tungstocobaltate(III) in Aqueous Medium
E-Journal of Chemistry
author_facet Prabla Kumari
Alaka Das
Dillip Kumar Baral
A. K. Pattanaik
P. Mohanty
author_sort Prabla Kumari
title Nonenzymatic NADH-Dependent Reduction of Keggin-Type 12-Tungstocobaltate(III) in Aqueous Medium
title_short Nonenzymatic NADH-Dependent Reduction of Keggin-Type 12-Tungstocobaltate(III) in Aqueous Medium
title_full Nonenzymatic NADH-Dependent Reduction of Keggin-Type 12-Tungstocobaltate(III) in Aqueous Medium
title_fullStr Nonenzymatic NADH-Dependent Reduction of Keggin-Type 12-Tungstocobaltate(III) in Aqueous Medium
title_full_unstemmed Nonenzymatic NADH-Dependent Reduction of Keggin-Type 12-Tungstocobaltate(III) in Aqueous Medium
title_sort nonenzymatic nadh-dependent reduction of keggin-type 12-tungstocobaltate(iii) in aqueous medium
publisher Hindawi Limited
series E-Journal of Chemistry
issn 0973-4945
2090-9810
publishDate 2011-01-01
description The kinetics of the electron transfer reaction of NADH with 12-tungstocobaltate(III) has been studied over the range 5.07 ≤ 104 [NADH] ≤ 15.22 mol dm-3, 7.0 ≤ pH ≤ 8.0 and 20 ≤ t ≤ 35 oC in aqueous medium. The electron transfer reaction showed first-order dependence each in [NADH]T and [12-tungstocobaltate(III)]T. The products of the reaction were found to be NAD+ and 12-tungstocobaltate(II). The activation parameters ΔH# (kJ mol-1) and ΔS# (JK-1mol-1) of the electron transfer reactions were found to be 64.4±1.8 and -48.86±6.0. Negative value of ΔS# is an indicative of an ordered transition state for the electron transfer reaction.
url http://dx.doi.org/10.1155/2011/341865
work_keys_str_mv AT prablakumari nonenzymaticnadhdependentreductionofkeggintype12tungstocobaltateiiiinaqueousmedium
AT alakadas nonenzymaticnadhdependentreductionofkeggintype12tungstocobaltateiiiinaqueousmedium
AT dillipkumarbaral nonenzymaticnadhdependentreductionofkeggintype12tungstocobaltateiiiinaqueousmedium
AT akpattanaik nonenzymaticnadhdependentreductionofkeggintype12tungstocobaltateiiiinaqueousmedium
AT pmohanty nonenzymaticnadhdependentreductionofkeggintype12tungstocobaltateiiiinaqueousmedium
_version_ 1724975819342741504

Similar Items