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Article: Luminescent μ-ethynediyl and μ-butadiynediyl binuclear gold(I) complexes: Observation of 3(ππ*) emissions from bridging C n 2- units

TitleLuminescent μ-ethynediyl and μ-butadiynediyl binuclear gold(I) complexes: Observation of 3(ππ*) emissions from bridging C n 2- units
Authors
Issue Date2001
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html
Citation
Journal Of The American Chemical Society, 2001, v. 123 n. 21, p. 4985-4991 How to Cite?
AbstractThe synthesis and X-ray structural and spectroscopic characterization for LAuC≡CAuL·4CHCl 3 and LAuC≡C-C≡CAuL·2CH 2Cl 2 (1·4CHCl 3 and 2·2CH 2Cl 2, respectively; L = PCy 3, tricyclohexylphosphine) are reported. The bridging C n 2- units are structurally characterized as acetylene or diacetylene units, with C≡C distances of 1.19(1) and 1.199(8) Å for 1·4CHCl 3 and 2·2CH 2Cl 2, respectively. An important consequence of bonding to Au(I) for the C n 2- moieties is that the lowest-energy electronic excited states, which are essentially acetylenic 3(ππ*) in nature, acquire sufficient allowedness via Au spin-orbit coupling to appear prominently in both electronic absorption and emission spectra. The origin lines for both complexes are well-defined and are observed at 331 and 413 nm for 1 and 2, respectively. Sharp vibronic progressions corresponding to v(C≡C) are observed in both emission and absorption spectra. The acetylenic 3(ππ*) excited state of 2 has a long lifetime (τ 0 = 10.8 μs) in dichloromethane at room temperature and is a powerful reductant (E°[Au 2 +/Au 2*] ≤ -1.85 V vs SSCE).
Persistent Identifierhttp://hdl.handle.net/10722/167677
ISSN
2015 Impact Factor: 13.038
2015 SCImago Journal Rankings: 7.123
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChe, CMen_US
dc.contributor.authorChao, HYen_US
dc.contributor.authorMiskowski, VMen_US
dc.contributor.authorLi, Yen_US
dc.contributor.authorCheung, KKen_US
dc.date.accessioned2012-10-08T03:09:53Z-
dc.date.available2012-10-08T03:09:53Z-
dc.date.issued2001en_US
dc.identifier.citationJournal Of The American Chemical Society, 2001, v. 123 n. 21, p. 4985-4991en_US
dc.identifier.issn0002-7863en_US
dc.identifier.urihttp://hdl.handle.net/10722/167677-
dc.description.abstractThe synthesis and X-ray structural and spectroscopic characterization for LAuC≡CAuL·4CHCl 3 and LAuC≡C-C≡CAuL·2CH 2Cl 2 (1·4CHCl 3 and 2·2CH 2Cl 2, respectively; L = PCy 3, tricyclohexylphosphine) are reported. The bridging C n 2- units are structurally characterized as acetylene or diacetylene units, with C≡C distances of 1.19(1) and 1.199(8) Å for 1·4CHCl 3 and 2·2CH 2Cl 2, respectively. An important consequence of bonding to Au(I) for the C n 2- moieties is that the lowest-energy electronic excited states, which are essentially acetylenic 3(ππ*) in nature, acquire sufficient allowedness via Au spin-orbit coupling to appear prominently in both electronic absorption and emission spectra. The origin lines for both complexes are well-defined and are observed at 331 and 413 nm for 1 and 2, respectively. Sharp vibronic progressions corresponding to v(C≡C) are observed in both emission and absorption spectra. The acetylenic 3(ππ*) excited state of 2 has a long lifetime (τ 0 = 10.8 μs) in dichloromethane at room temperature and is a powerful reductant (E°[Au 2 +/Au 2*] ≤ -1.85 V vs SSCE).en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.htmlen_US
dc.relation.ispartofJournal of the American Chemical Societyen_US
dc.titleLuminescent μ-ethynediyl and μ-butadiynediyl binuclear gold(I) complexes: Observation of 3(ππ*) emissions from bridging C n 2- unitsen_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.doi10.1021/ja001706wen_US
dc.identifier.pmid11457326-
dc.identifier.scopuseid_2-s2.0-0034806609en_US
dc.identifier.hkuros64749-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034806609&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume123en_US
dc.identifier.issue21en_US
dc.identifier.spage4985en_US
dc.identifier.epage4991en_US
dc.identifier.isiWOS:000168914400014-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridChe, CM=7102442791en_US
dc.identifier.scopusauthoridChao, HY=7202973715en_US
dc.identifier.scopusauthoridMiskowski, VM=6603008214en_US
dc.identifier.scopusauthoridLi, Y=23667989500en_US
dc.identifier.scopusauthoridCheung, KK=7402406613en_US

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