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Article: Structural and mechanistic studies of co-ordination compounds. Part 34. Electrochemical behaviour of some octahedral ruthenium(III)/ ruthenium(II) couples containing tetra-amine or -thioether ligands
Title | Structural and mechanistic studies of co-ordination compounds. Part 34. Electrochemical behaviour of some octahedral ruthenium(III)/ ruthenium(II) couples containing tetra-amine or -thioether ligands |
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Authors | |
Issue Date | 1982 |
Publisher | Royal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/dalton |
Citation | Journal Of The Chemical Society, Dalton Transactions, 1982 n. 8, p. 1457-1463 How to Cite? |
Abstract | Several factors have been found to affect the half-wave potentials (E1/2) of some cis- and trans- [RuL(A)X]n +,(n-1)+ couples, where L represents either four unidentate, two bidentate, or one quadridentate amines or thioethers, and A and X are unidentate π-acid ligands. A variation in the π-accepting capability of these L, A, or X ligands appears to be the most dominating factor. Thus, for analogous cis-[RuLCl2]+,0 couples, a change from L = L7 (1,4,8,11-tetra-azacyclotetradecane) to L = L16 (1,4,8,11-tetrathiacyclotetradecane) results in an anodic shift of ca. 1.0 V in both aqueous and CH3CN solutions. For some common acid ligands, the E1/2 values of cis- and trans-[RuLX2]+,0 couples increase in the following order of X: N3 - < Cl- < Br- < NCS- < NO2 - over a span of ca. 0.7 V. Other factors, such as the presence of α-di-imine functions in the chelate rings, steric, ligand-chelation, ring-size effects and geometrical configuration of the complexes, and solvents also affect the E1/2 values of these RuIII/RuII couples. It thus appears that a suitable combination of the above factors may 'tune' a RuIII/RuII couple to possess any desired E1/2 value over the range -0.80 to +0.83 V vs. Ag/Ag+(0.1 mol dm-3). |
Persistent Identifier | http://hdl.handle.net/10722/168264 |
ISSN | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Poon, CK | en_US |
dc.contributor.author | Kwong, SS | en_US |
dc.contributor.author | Che, CM | en_US |
dc.contributor.author | Kan, YP | en_US |
dc.date.accessioned | 2012-10-08T03:16:47Z | - |
dc.date.available | 2012-10-08T03:16:47Z | - |
dc.date.issued | 1982 | en_US |
dc.identifier.citation | Journal Of The Chemical Society, Dalton Transactions, 1982 n. 8, p. 1457-1463 | en_US |
dc.identifier.issn | 1472-7773 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/168264 | - |
dc.description.abstract | Several factors have been found to affect the half-wave potentials (E1/2) of some cis- and trans- [RuL(A)X]n +,(n-1)+ couples, where L represents either four unidentate, two bidentate, or one quadridentate amines or thioethers, and A and X are unidentate π-acid ligands. A variation in the π-accepting capability of these L, A, or X ligands appears to be the most dominating factor. Thus, for analogous cis-[RuLCl2]+,0 couples, a change from L = L7 (1,4,8,11-tetra-azacyclotetradecane) to L = L16 (1,4,8,11-tetrathiacyclotetradecane) results in an anodic shift of ca. 1.0 V in both aqueous and CH3CN solutions. For some common acid ligands, the E1/2 values of cis- and trans-[RuLX2]+,0 couples increase in the following order of X: N3 - < Cl- < Br- < NCS- < NO2 - over a span of ca. 0.7 V. Other factors, such as the presence of α-di-imine functions in the chelate rings, steric, ligand-chelation, ring-size effects and geometrical configuration of the complexes, and solvents also affect the E1/2 values of these RuIII/RuII couples. It thus appears that a suitable combination of the above factors may 'tune' a RuIII/RuII couple to possess any desired E1/2 value over the range -0.80 to +0.83 V vs. Ag/Ag+(0.1 mol dm-3). | en_US |
dc.language | eng | en_US |
dc.publisher | Royal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/dalton | en_US |
dc.relation.ispartof | Journal of the Chemical Society, Dalton Transactions | en_US |
dc.title | Structural and mechanistic studies of co-ordination compounds. Part 34. Electrochemical behaviour of some octahedral ruthenium(III)/ ruthenium(II) couples containing tetra-amine or -thioether ligands | en_US |
dc.type | Article | en_US |
dc.identifier.email | Che, CM:cmche@hku.hk | en_US |
dc.identifier.authority | Che, CM=rp00670 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1039/DT9820001457 | en_US |
dc.identifier.scopus | eid_2-s2.0-37049107318 | en_US |
dc.identifier.issue | 8 | en_US |
dc.identifier.spage | 1457 | en_US |
dc.identifier.epage | 1463 | en_US |
dc.identifier.isi | WOS:A1982PB31700012 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Poon, CK=7202673504 | en_US |
dc.identifier.scopusauthorid | Kwong, SS=15134212900 | en_US |
dc.identifier.scopusauthorid | Che, CM=7102442791 | en_US |
dc.identifier.scopusauthorid | Kan, YP=23070538900 | en_US |
dc.identifier.issnl | 1364-5447 | - |