- Title
- Interaction of sulfur dioxide and cyanide with cobalt (II) tetrasulfophthalocyanine in aqueous media
- Creator
- Thamae, Mamothibe, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2002
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/289595
- Identifier
- vital:56652
- Identifier
- xlink:href="https://doi.org/10.1016/S0277-5387(01)00968-8"
- Description
- Kinetic and equilibrium studies for the coordination of cyanide or sulfur dioxide to the cobalt(II) tetrasulfophthalocyanine ([CoTSPc]4−) complex are reported. The equilibrium constant for the coordination of the cyanide under pH 11 conditions and an oxygen atmosphere, and the formation of [(CN−)2Co(III)TSPc]5− species, was found to be 2.1×101 dm3 mol−1 and the rate constant, kf was found to be 7.4 dm3 mol−1 s−1. Similarly, the coordination of SO2 to [CoTSPc]4− occurred with an equilibrium constant of 8.7×101 dm3 mol−1 and a rate constant of 2.1×102 dm3 mol−1 s−1, at pH 11. These rate and equilibrium constants represent the coordination of the second cyanide or sulfur dioxide ligands to the [CoTSPc]4− species. Coordination of the first ligand occurred faster than that of the second ligand in both cases. The coordination is accompanied by the oxidation of the central Co(II) metal with the formation of a Co(III) tetrasulfophthalocyanine species.
- Format
- computer, online resource, application/pdf, 1 online resource (8 pages), pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Polyhedron, Thamae, M. and Nyokong, T., 2002. Interaction of sulfur dioxide and cyanide with cobalt (II) tetrasulfophthalocyanine in aqueous media. Polyhedron, 21(1), pp.133-140, Polyhedron volume 21 number 1 p. 133 2002 1873-3719
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Elsevier Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
- Rights
- Closed Access
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Collections
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
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