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Article: Synthesis, structural characterization and photophysical properties of ethyne-gold(I) complexes

TitleSynthesis, structural characterization and photophysical properties of ethyne-gold(I) complexes
Authors
KeywordsAlkyne
Gold
Phosphine
UV-visible spectra
X-ray structure CH⋯π interactions
Issue Date1994
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jorganchem
Citation
Journal Of Organometallic Chemistry, 1994, v. 484 n. 1-2, p. 209-224 How to Cite?
AbstractA series of closely related ethynyl-gold(I) complexes was synthesized by reaction of Au(PR 3)Cl with an alkaline solution of the ethyne. The molecular structures of the ethynediyl-digold complexes NpPh 2PACCAuPNpPh 2·2CHCl 3 (1) (Np = naphthyl), Np 2PhPAuCCAuPNp 2Ph·6CHCl 3 (2) and Fc 2PhPAu CCAuPFc 2Ph·4EtOH (3) (Fc = ferrocenyl) and the phenylethynyl-gold complex Fc 2PhPAuC CPh (4) were determined by single-crystal X-ray diffraction measurements. Variation of the phosphines does not have a significant influence on the bonding in the central PAuCC unit, the AuP and AuC distances being in the ranges 2.274(4)-2.289(5) and 1.983(8)-2.002(6) Å, respectively. Although none of the compounds have short Au⋯Au contacts, compounds 1 and 2 do show novel CH⋯π interactions between the proton of CHCl 3 and the π-electron system of the CC bond. In 1, pairs of CHCl 3 molecules are located with their protons 2.4 Å from the centre of the CC bond with the C H bond directed orthogonally towards the centre of the ethyne bond. In 2, two pairs of CHCl 3 molecules are located around the CC bond, with 2.5 Å between the proton and the centre of the triple bond, resulting in a pseudo-octahedral arrangement around CC. In addition to the CH⋯π interactions, the structures of 1 and 2 also show a range of intermolecular aromatic-aromatic interactions. The first structural determination of naphthylphosphines resulted in estimates of their steric requirements. The UV-visible spectra of CH 2Cl 2 solutions of the ethynediyl compounds exhibit intense absorption bands at ca. 300 nm assignable to intraligand transitions. Excitation of solid sample or fluid solution of complex 1 at λ > 330 nm resulted in intense long-lived luminescence. Excitation of a solution of 2 at 350 and 380 nm led to different types of photoluminescence. © 1994.
Persistent Identifierhttp://hdl.handle.net/10722/69063
ISSN
2015 Impact Factor: 2.336
2015 SCImago Journal Rankings: 0.732
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMüller, TEen_HK
dc.contributor.authorChoi, SWKen_HK
dc.contributor.authorMingos, DMPen_HK
dc.contributor.authorMurphy, Den_HK
dc.contributor.authorWilliams, DJen_HK
dc.contributor.authorWingWah Yam, Ven_HK
dc.date.accessioned2010-09-06T06:10:13Z-
dc.date.available2010-09-06T06:10:13Z-
dc.date.issued1994en_HK
dc.identifier.citationJournal Of Organometallic Chemistry, 1994, v. 484 n. 1-2, p. 209-224en_HK
dc.identifier.issn0022-328Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/69063-
dc.description.abstractA series of closely related ethynyl-gold(I) complexes was synthesized by reaction of Au(PR 3)Cl with an alkaline solution of the ethyne. The molecular structures of the ethynediyl-digold complexes NpPh 2PACCAuPNpPh 2·2CHCl 3 (1) (Np = naphthyl), Np 2PhPAuCCAuPNp 2Ph·6CHCl 3 (2) and Fc 2PhPAu CCAuPFc 2Ph·4EtOH (3) (Fc = ferrocenyl) and the phenylethynyl-gold complex Fc 2PhPAuC CPh (4) were determined by single-crystal X-ray diffraction measurements. Variation of the phosphines does not have a significant influence on the bonding in the central PAuCC unit, the AuP and AuC distances being in the ranges 2.274(4)-2.289(5) and 1.983(8)-2.002(6) Å, respectively. Although none of the compounds have short Au⋯Au contacts, compounds 1 and 2 do show novel CH⋯π interactions between the proton of CHCl 3 and the π-electron system of the CC bond. In 1, pairs of CHCl 3 molecules are located with their protons 2.4 Å from the centre of the CC bond with the C H bond directed orthogonally towards the centre of the ethyne bond. In 2, two pairs of CHCl 3 molecules are located around the CC bond, with 2.5 Å between the proton and the centre of the triple bond, resulting in a pseudo-octahedral arrangement around CC. In addition to the CH⋯π interactions, the structures of 1 and 2 also show a range of intermolecular aromatic-aromatic interactions. The first structural determination of naphthylphosphines resulted in estimates of their steric requirements. The UV-visible spectra of CH 2Cl 2 solutions of the ethynediyl compounds exhibit intense absorption bands at ca. 300 nm assignable to intraligand transitions. Excitation of solid sample or fluid solution of complex 1 at λ > 330 nm resulted in intense long-lived luminescence. Excitation of a solution of 2 at 350 and 380 nm led to different types of photoluminescence. © 1994.en_HK
dc.languageengen_HK
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jorganchemen_HK
dc.relation.ispartofJournal of Organometallic Chemistryen_HK
dc.subjectAlkyneen_HK
dc.subjectGolden_HK
dc.subjectPhosphineen_HK
dc.subjectUV-visible spectraen_HK
dc.subjectX-ray structure CH⋯π interactionsen_HK
dc.titleSynthesis, structural characterization and photophysical properties of ethyne-gold(I) complexesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-328X&volume=484&spage=209&epage=224&date=1994&atitle=Synthesis,+structural+characterization+and+photophysical+properties+of+ethyne-gold(I)+complexesen_HK
dc.identifier.emailWingWah Yam, V:wwyam@hku.hken_HK
dc.identifier.authorityWingWah Yam, V=rp00822en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/0022-328X(94)87207-4-
dc.identifier.scopuseid_2-s2.0-0002568510en_HK
dc.identifier.hkuros1389en_HK
dc.identifier.volume484en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage209en_HK
dc.identifier.epage224en_HK
dc.identifier.isiWOS:A1994PZ70600031-
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridMüller, TE=35227740300en_HK
dc.identifier.scopusauthoridChoi, SWK=14526815000en_HK
dc.identifier.scopusauthoridMingos, DMP=8087887300en_HK
dc.identifier.scopusauthoridMurphy, D=7404062446en_HK
dc.identifier.scopusauthoridWilliams, DJ=7407409119en_HK
dc.identifier.scopusauthoridWingWah Yam, V=18539304700en_HK

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