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Article: Structural and mechanistic studies of co-ordination compounds. Part 32. Different photochemical pathways of some trans-dihalogenobis(ethylenediamine)ruthenium(III) cations: Ligand-field versus ligand-to-metal charge-transfer excited states

TitleStructural and mechanistic studies of co-ordination compounds. Part 32. Different photochemical pathways of some trans-dihalogenobis(ethylenediamine)ruthenium(III) cations: Ligand-field versus ligand-to-metal charge-transfer excited states
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. 3, p. 531-534 How to Cite?
AbstractIt has been demonstrated that the ligand-field (l.f.) excitation of trans-[Ru(en)2I2]+ (en = ethylenediamine) leads to iodide aquation with extensive stereochemical change (>85%), whereas ligand-to-metal charge-transfer (l.m.c.t.) excitation leads to iodide aquation with complete retention of configuration. For trans-[Ru(en)2X2]+ (X = Cl or Br), where l.f. and l.m.c.t. bands accidentally overlap with each other, the observed photochemical behaviour of halide aquation with extensive stereochemical change is taken to occur from the I.f. excited states, whether these states are populated by direct absorption into the l.f. bands or by internal conversion from the l.m.c.t. states. The gradual decrease in the isomerization quantum yields from X = Cl through Br to I (6.2 × 10-3, 3.2 × 10-3, and 2.3 × 10-3 respectively) is discussed.
Persistent Identifierhttp://hdl.handle.net/10722/168257
ISSN
2002 Impact Factor: 3.023
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorPoon, CKen_US
dc.contributor.authorLau, TCen_US
dc.contributor.authorChe, CMen_US
dc.date.accessioned2012-10-08T03:16:44Z-
dc.date.available2012-10-08T03:16:44Z-
dc.date.issued1982en_US
dc.identifier.citationJournal Of The Chemical Society, Dalton Transactions, 1982 n. 3, p. 531-534en_US
dc.identifier.issn1472-7773en_US
dc.identifier.urihttp://hdl.handle.net/10722/168257-
dc.description.abstractIt has been demonstrated that the ligand-field (l.f.) excitation of trans-[Ru(en)2I2]+ (en = ethylenediamine) leads to iodide aquation with extensive stereochemical change (>85%), whereas ligand-to-metal charge-transfer (l.m.c.t.) excitation leads to iodide aquation with complete retention of configuration. For trans-[Ru(en)2X2]+ (X = Cl or Br), where l.f. and l.m.c.t. bands accidentally overlap with each other, the observed photochemical behaviour of halide aquation with extensive stereochemical change is taken to occur from the I.f. excited states, whether these states are populated by direct absorption into the l.f. bands or by internal conversion from the l.m.c.t. states. The gradual decrease in the isomerization quantum yields from X = Cl through Br to I (6.2 × 10-3, 3.2 × 10-3, and 2.3 × 10-3 respectively) is discussed.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 32. Different photochemical pathways of some trans-dihalogenobis(ethylenediamine)ruthenium(III) cations: Ligand-field versus ligand-to-metal charge-transfer excited statesen_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/DT9820000531en_US
dc.identifier.scopuseid_2-s2.0-37049093055en_US
dc.identifier.issue3en_US
dc.identifier.spage531en_US
dc.identifier.epage534en_US
dc.identifier.isiWOS:A1982NF28800007-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridPoon, CK=7202673504en_US
dc.identifier.scopusauthoridLau, TC=7102222310en_US
dc.identifier.scopusauthoridChe, CM=7102442791en_US

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