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Article: Syntheses, Luminescence Behavior, and Assembly Reaction of Tetraalkynylplatinate(II) Complexes: Crystal Structures of [Pt(tBu3trpy)(C≡CC5H4N)Pt(tBu3trpy)](PF6)3 and [Pt2Ag4(C≡CC≡CC6H4CH3-4)8(THF)4]

TitleSyntheses, Luminescence Behavior, and Assembly Reaction of Tetraalkynylplatinate(II) Complexes: Crystal Structures of [Pt(tBu3trpy)(C≡CC5H4N)Pt(tBu3trpy)](PF6)3 and [Pt2Ag4(C≡CC≡CC6H4CH3-4)8(THF)4]
Authors
Issue Date2004
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/ic
Citation
Inorganic Chemistry, 2004, v. 43 n. 2, p. 812-821 How to Cite?
AbstractA series of tetraalkynylplatinate(II) complexes, (NBu 4) 2[Pt(C≡CR) 4] (R = C 6H 4N-4, C 6H 4N-3, and C 6H 3N 2-5), and the diynyl analogues, (NBu 4) 2[Pt(C≡CC≡ CR) 4] (R = C 6H 5 and C 6H 4CH 3-4), have been synthesized. These complexes displayed intense photoluminescence, which was assigned as metal-to-ligand charge transfer (MLCT) transitions. Reaction of (Bu 4N) 2[Pt(C≡CC 5H 4N-4) 4] with 4 equiv of [Pt( tBu 3trpy)(MeCN)](OTf) 2 in methanol did not yield the expected pentanuclear platinum product, [Pt(C≡CC 5H 4N) 4{Pt tBu 3trpy)} 4](OTf) 6, but instead afforded a strongly luminescent 4-ethynylpyridine-bridged dinuclear complex, [Pt( tBu 3trpy)(C≡CC 5H 4N)Pt( tBu 3trpy)](PF 6) 3, which has been structurally characterized. The emission origin is assigned as derived from states of predominantly 3MLCT [d π(Pt) → π* ( tBu 3trpy) character, probably mixed with some intraligand 3IL [π → π*(C≡)], and ligand-to-ligand charge transfer 3LLCT [π(C≡C) → π*( tBu 3trpy)] character. On the other hand, reaction of (Bu 4N) 2[Pt(C≡CC≡ CC 6H 4CH 3-4) 4] with [Ag(MeCN) 4][BF 4] gave a mixed-metal aggregate, [Pt 2Ag 4(C≡CC≡CC 6H 4CH 3-4) 8(THF) 4]. The crystal structure of [Pt 2Ag 4(C≡CC≡CC 6H 4CH 3-4) 8(THF) 4] has also been determined. A comparison study of the spectroscopic properties of the hexanuclear platinum-silver complex with its precursor complex has been made and their spectroscopic origins were suggested.
Persistent Identifierhttp://hdl.handle.net/10722/167909
ISSN
2015 Impact Factor: 4.82
2015 SCImago Journal Rankings: 1.873
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYam, VWWen_HK
dc.contributor.authorHui, CKen_HK
dc.contributor.authorYu, SYen_HK
dc.contributor.authorZhu, Nen_HK
dc.date.accessioned2012-10-08T03:12:49Z-
dc.date.available2012-10-08T03:12:49Z-
dc.date.issued2004en_HK
dc.identifier.citationInorganic Chemistry, 2004, v. 43 n. 2, p. 812-821en_HK
dc.identifier.issn0020-1669en_HK
dc.identifier.urihttp://hdl.handle.net/10722/167909-
dc.description.abstractA series of tetraalkynylplatinate(II) complexes, (NBu 4) 2[Pt(C≡CR) 4] (R = C 6H 4N-4, C 6H 4N-3, and C 6H 3N 2-5), and the diynyl analogues, (NBu 4) 2[Pt(C≡CC≡ CR) 4] (R = C 6H 5 and C 6H 4CH 3-4), have been synthesized. These complexes displayed intense photoluminescence, which was assigned as metal-to-ligand charge transfer (MLCT) transitions. Reaction of (Bu 4N) 2[Pt(C≡CC 5H 4N-4) 4] with 4 equiv of [Pt( tBu 3trpy)(MeCN)](OTf) 2 in methanol did not yield the expected pentanuclear platinum product, [Pt(C≡CC 5H 4N) 4{Pt tBu 3trpy)} 4](OTf) 6, but instead afforded a strongly luminescent 4-ethynylpyridine-bridged dinuclear complex, [Pt( tBu 3trpy)(C≡CC 5H 4N)Pt( tBu 3trpy)](PF 6) 3, which has been structurally characterized. The emission origin is assigned as derived from states of predominantly 3MLCT [d π(Pt) → π* ( tBu 3trpy) character, probably mixed with some intraligand 3IL [π → π*(C≡)], and ligand-to-ligand charge transfer 3LLCT [π(C≡C) → π*( tBu 3trpy)] character. On the other hand, reaction of (Bu 4N) 2[Pt(C≡CC≡ CC 6H 4CH 3-4) 4] with [Ag(MeCN) 4][BF 4] gave a mixed-metal aggregate, [Pt 2Ag 4(C≡CC≡CC 6H 4CH 3-4) 8(THF) 4]. The crystal structure of [Pt 2Ag 4(C≡CC≡CC 6H 4CH 3-4) 8(THF) 4] has also been determined. A comparison study of the spectroscopic properties of the hexanuclear platinum-silver complex with its precursor complex has been made and their spectroscopic origins were suggested.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/icen_HK
dc.relation.ispartofInorganic Chemistryen_HK
dc.titleSyntheses, Luminescence Behavior, and Assembly Reaction of Tetraalkynylplatinate(II) Complexes: Crystal Structures of [Pt(tBu3trpy)(C≡CC5H4N)Pt(tBu3trpy)](PF6)3 and [Pt2Ag4(C≡CC≡CC6H4CH3-4)8(THF)4]en_HK
dc.typeArticleen_HK
dc.identifier.emailYam, VWW: wwyam@hku.hken_HK
dc.identifier.emailZhu, N: nzhu@hkucc.hku.hken_HK
dc.identifier.authorityYam, VWW=rp00822en_HK
dc.identifier.authorityZhu, N=rp00845en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/ic034877len_HK
dc.identifier.pmid14731046-
dc.identifier.scopuseid_2-s2.0-1642559182en_HK
dc.identifier.hkuros91296-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-1642559182&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume43en_HK
dc.identifier.issue2en_HK
dc.identifier.spage812en_HK
dc.identifier.epage821en_HK
dc.identifier.isiWOS:000188294000051-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYam, VWW=18539304700en_HK
dc.identifier.scopusauthoridHui, CK=15767404500en_HK
dc.identifier.scopusauthoridYu, SY=8358202900en_HK
dc.identifier.scopusauthoridZhu, N=7201449530en_HK

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