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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

TitleStructural 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
Authors
Issue Date1982
PublisherRoyal 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?
AbstractSeveral 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 Identifierhttp://hdl.handle.net/10722/168264
ISSN
2002 Impact Factor: 3.023
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorPoon, CKen_US
dc.contributor.authorKwong, SSen_US
dc.contributor.authorChe, CMen_US
dc.contributor.authorKan, YPen_US
dc.date.accessioned2012-10-08T03:16:47Z-
dc.date.available2012-10-08T03:16:47Z-
dc.date.issued1982en_US
dc.identifier.citationJournal Of The Chemical Society, Dalton Transactions, 1982 n. 8, p. 1457-1463en_US
dc.identifier.issn1472-7773en_US
dc.identifier.urihttp://hdl.handle.net/10722/168264-
dc.description.abstractSeveral 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.languageengen_US
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/daltonen_US
dc.relation.ispartofJournal of the Chemical Society, Dalton Transactionsen_US
dc.titleStructural and mechanistic studies of co-ordination compounds. Part 34. Electrochemical behaviour of some octahedral ruthenium(III)/ ruthenium(II) couples containing tetra-amine or -thioether ligandsen_US
dc.typeArticleen_US
dc.identifier.emailChe, CM:cmche@hku.hken_US
dc.identifier.authorityChe, CM=rp00670en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1039/DT9820001457en_US
dc.identifier.scopuseid_2-s2.0-37049107318en_US
dc.identifier.issue8en_US
dc.identifier.spage1457en_US
dc.identifier.epage1463en_US
dc.identifier.isiWOS:A1982PB31700012-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridPoon, CK=7202673504en_US
dc.identifier.scopusauthoridKwong, SS=15134212900en_US
dc.identifier.scopusauthoridChe, CM=7102442791en_US
dc.identifier.scopusauthoridKan, YP=23070538900en_US

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