Redox Kinetics and Mechanism of the Oxidation of Thiourea by Diaquotetrakis(2,2’- Bipyridine) - µ - Oxodiruthenium (III) Ion, in Aqueous Perchloric Acid
| dc.contributor.author | Mohammed, Y. | |
| dc.contributor.author | Idris, S.O. | |
| dc.contributor.author | Iyun, J.F. | |
| dc.date.accessioned | 2023-12-14T06:54:06Z | |
| dc.date.available | 2023-12-14T06:54:06Z | |
| dc.date.issued | 2014-08-08 | |
| dc.description.abstract | The kinetics of the oxidation of thiocarbamide (thiourea) by diaquotetrakis(2,2’- bipyridine) - µ - oxodiruthenium (III) ion, [(bpy)2(H2O)RuORu(H2O)(bpy)2]4+, in perchloric acid has been investigated at a temperature, T = 30±1ºC, ionic strength, I = 0.5 mol dm-3 (NaClO4) and hydrogen ion concentration, [H+] = 5.0 x 10–2 mol dm-3. The reaction showed a stoichiometry of 1:2 (oxidant/ thiourea), first order kinetics with respect to the thiourea (RSH), k2 = (7.39±0.05) dm3 mol–1 s–1, inverse [H+] dependence and zero salt effect. The rate equation for the reaction has been proposed – d[(bpy)2(H2O)RuORu(H2O)(bpy)2]4+]/dt=(a+b[ ])[(bpy)2(H2O)RuORu(H2O)(bpy)2]4+[RSH]. Outer sphere mechanism is implicated to operate in this reaction as evidenced by lack of the formation of a stable intermediate complex as suggested by absence of intercept in the Michaelis - Menten plot, lack of shift in λmax of the reaction mixture 1 minute after start of reaction and absence of observable anion catalysis. A plausible mechanism is proposed. | en_US |
| dc.identifier.citation | Mohammed Et. el. (2014) Redox Kinetics and Mechanism of the Oxidation of Thiourea by Diaquotetrakis(2,2’- Bipyridine) - µ - Oxodiruthenium (III) Ion, in Aqueous Perchloric Acid | en_US |
| dc.identifier.uri | https://keffi.nsuk.edu.ng/handle/20.500.14448/5532 | |
| dc.language.iso | en | en_US |
| dc.publisher | Department of Chemistry Education, Nasarawa State University Keffi | en_US |
| dc.subject | Kinetics; oxidation; anion catalysis; salt effect. | en_US |
| dc.title | Redox Kinetics and Mechanism of the Oxidation of Thiourea by Diaquotetrakis(2,2’- Bipyridine) - µ - Oxodiruthenium (III) Ion, in Aqueous Perchloric Acid | en_US |
| dc.type | Article | en_US |