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Article: Novel luminescent polynuclear gold(I) phosphine complexes. Synthesis, spectroscopy, and X-ray crystal structure of [Au3(dmmp) 2]3+ [dmmp = bis(dimethylphosphinomethyl)methylphosphine]

TitleNovel luminescent polynuclear gold(I) phosphine complexes. Synthesis, spectroscopy, and X-ray crystal structure of [Au3(dmmp) 2]3+ [dmmp = bis(dimethylphosphinomethyl)methylphosphine]
Authors
Issue Date1990
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, 1990 n. 12, p. 3747-3752 How to Cite?
AbstractReaction of K[AuCl4] with bis(dimethylphosphinomethyl)methylphosphine (dmmp) in the presence of thiodiglycol (2,2′-thiodiethanol) in methanol yielded [Au3(dmmp)2]3+, which was isolated as its perchlorate salt. The X-ray crystal structure of [Au3 (dmmp)2][ClO4]3 has been determined: monoclinic, space group P21/n, a = 1 2.880(3), b = 14.210(1), c = 21.208(2) Å, β = 106.25(1)°, Z = 4, R = 0.047 for 2 927 observed Mo-Kα data. The Au-Au-Au bond angle of 136.26(4)° is greatly distorted from rectilinear geometry, with intramolecular Au⋯Au distances of 2.981(1) and 2.962(1) Å. Excitation of a degassed acetonitrile solution of [Au3(dmmp) 2]3+ at 300-370 nm resulted in dual phosphorescence (λ = 467 nm, τ0 = 1.6 ± 0.2 μs; λ = 580 nm, τ0 = 7.0 ± 0.5 μs). A comparison between the electronic absorption and emission spectra of [Au3(dmmp) 2]3+ and [Au2 (dmpm) 2]2+ [[dmpm = bis(dimethylphosphino)methane] has been made. The assignment of the lowest electronic excited state in the (P2Au)n system has been suggested to be 3 [(dδ*)(pσ)]. The excited-state redox potentials of [Au3(dmmp)2]3+* and [Au2(dmpm)2]2+* have been determined through oxidative quenching experiments with a series of pyridinium acceptors of variable reduction potential.
Persistent Identifierhttp://hdl.handle.net/10722/168197
ISSN
2002 Impact Factor: 3.023
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYam, VWWen_US
dc.contributor.authorLai, TFen_US
dc.contributor.authorChe, CMen_US
dc.date.accessioned2012-10-08T03:16:10Z-
dc.date.available2012-10-08T03:16:10Z-
dc.date.issued1990en_US
dc.identifier.citationJournal Of The Chemical Society, Dalton Transactions, 1990 n. 12, p. 3747-3752en_US
dc.identifier.issn1472-7773en_US
dc.identifier.urihttp://hdl.handle.net/10722/168197-
dc.description.abstractReaction of K[AuCl4] with bis(dimethylphosphinomethyl)methylphosphine (dmmp) in the presence of thiodiglycol (2,2′-thiodiethanol) in methanol yielded [Au3(dmmp)2]3+, which was isolated as its perchlorate salt. The X-ray crystal structure of [Au3 (dmmp)2][ClO4]3 has been determined: monoclinic, space group P21/n, a = 1 2.880(3), b = 14.210(1), c = 21.208(2) Å, β = 106.25(1)°, Z = 4, R = 0.047 for 2 927 observed Mo-Kα data. The Au-Au-Au bond angle of 136.26(4)° is greatly distorted from rectilinear geometry, with intramolecular Au⋯Au distances of 2.981(1) and 2.962(1) Å. Excitation of a degassed acetonitrile solution of [Au3(dmmp) 2]3+ at 300-370 nm resulted in dual phosphorescence (λ = 467 nm, τ0 = 1.6 ± 0.2 μs; λ = 580 nm, τ0 = 7.0 ± 0.5 μs). A comparison between the electronic absorption and emission spectra of [Au3(dmmp) 2]3+ and [Au2 (dmpm) 2]2+ [[dmpm = bis(dimethylphosphino)methane] has been made. The assignment of the lowest electronic excited state in the (P2Au)n system has been suggested to be 3 [(dδ*)(pσ)]. The excited-state redox potentials of [Au3(dmmp)2]3+* and [Au2(dmpm)2]2+* have been determined through oxidative quenching experiments with a series of pyridinium acceptors of variable reduction potential.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.titleNovel luminescent polynuclear gold(I) phosphine complexes. Synthesis, spectroscopy, and X-ray crystal structure of [Au3(dmmp) 2]3+ [dmmp = bis(dimethylphosphinomethyl)methylphosphine]en_US
dc.typeArticleen_US
dc.identifier.emailYam, VWW:wwyam@hku.hken_US
dc.identifier.emailChe, CM:cmche@hku.hken_US
dc.identifier.authorityYam, VWW=rp00822en_US
dc.identifier.authorityChe, CM=rp00670en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1039/DT9900003747en_US
dc.identifier.scopuseid_2-s2.0-37049073407en_US
dc.identifier.issue12en_US
dc.identifier.spage3747en_US
dc.identifier.epage3752en_US
dc.identifier.isiWOS:A1990EP09800029-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridYam, VWW=18539304700en_US
dc.identifier.scopusauthoridLai, TF=7202203523en_US
dc.identifier.scopusauthoridChe, CM=7102442791en_US

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