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Article: Covalently linked donor-acceptor cyclometalated platinum(II) complexes. Structure and luminescent properties
Title | Covalently linked donor-acceptor cyclometalated platinum(II) complexes. Structure and luminescent properties |
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Authors | |
Issue Date | 1993 |
Publisher | American 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, 1993, v. 115 n. 24, p. 11245-11253 How to Cite? |
Abstract | Reaction of [Pt(CH3CN)4]2+ with 2,9-diphenyl-1,10-phenanthroline (dpp) in acetonitrile gave the cyclometalated complex [Pt(C N N-dpp)(CH3CN)](ClO4) {here abbreviated as [7](ClO4)}, the structure of which has been established by 1H-1H COSY and X-ray crystallography: triclinic, P1̄, a = 13.322(3) Å, b = 13.877(3) Å, c = 14.164(6) Å, α = 86.74(3)°, β= 105.87(3)°, γ = 108.93(2)°, V = 2381.0(12) Å3, Z = 2. The resemblance between solution excimeric emission and solid-state emission of 7 suggests that the structure of excimer [7]2* in CH2Cl2 is similar to the dimeric unit in the crystalline state. The coordinated CH3CN in 7 is substitution labile and can be easily replaced by nitrogen bases upon heating in acetone to give covalently-linked donor-acceptor organometallic complexes. Crystal structures of coordinated 4-(4-nitrobenzyl)pyridine and 4-(2-(9-anthryl)vinyl)pyridine substituted complexes (10 and 11, respectively) have been determined: [10](ClO4), triclinic, P1̄, a = 10.143(2) Å, b = 13.025(4) Å, c = 13.581(2) Å, α = 68.64(2)°, β = 77.15(2)°,γ = 68.00(2)°, V = 1541.6(7) Å3, Z = 2; [11](ClO4), monoclinic, P21/c, a = 13.065(4) Å, b = 18.647(5) Å, c = 16.276(4) Å, β = 116.59(2)°, V = 3546(3) Å3, Z = 4. In both structures, one of the phenyl rings of (C N N-dpp) is nearly parallel with the nitrogen base ligand, which is perpendicular to the mean plane defined by the atoms N(1), N(2), C(13), and Pt. The photoluminescent properties of 7 and complexes with covalently linked organic quenchers are described. |
Persistent Identifier | http://hdl.handle.net/10722/167321 |
ISSN | 2023 Impact Factor: 14.4 2023 SCImago Journal Rankings: 5.489 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Chan, CW | en_US |
dc.contributor.author | Lai, TF | en_US |
dc.contributor.author | Che, CM | en_US |
dc.contributor.author | Peng, SM | en_US |
dc.date.accessioned | 2012-10-08T03:05:39Z | - |
dc.date.available | 2012-10-08T03:05:39Z | - |
dc.date.issued | 1993 | en_US |
dc.identifier.citation | Journal Of The American Chemical Society, 1993, v. 115 n. 24, p. 11245-11253 | en_US |
dc.identifier.issn | 0002-7863 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/167321 | - |
dc.description.abstract | Reaction of [Pt(CH3CN)4]2+ with 2,9-diphenyl-1,10-phenanthroline (dpp) in acetonitrile gave the cyclometalated complex [Pt(C N N-dpp)(CH3CN)](ClO4) {here abbreviated as [7](ClO4)}, the structure of which has been established by 1H-1H COSY and X-ray crystallography: triclinic, P1̄, a = 13.322(3) Å, b = 13.877(3) Å, c = 14.164(6) Å, α = 86.74(3)°, β= 105.87(3)°, γ = 108.93(2)°, V = 2381.0(12) Å3, Z = 2. The resemblance between solution excimeric emission and solid-state emission of 7 suggests that the structure of excimer [7]2* in CH2Cl2 is similar to the dimeric unit in the crystalline state. The coordinated CH3CN in 7 is substitution labile and can be easily replaced by nitrogen bases upon heating in acetone to give covalently-linked donor-acceptor organometallic complexes. Crystal structures of coordinated 4-(4-nitrobenzyl)pyridine and 4-(2-(9-anthryl)vinyl)pyridine substituted complexes (10 and 11, respectively) have been determined: [10](ClO4), triclinic, P1̄, a = 10.143(2) Å, b = 13.025(4) Å, c = 13.581(2) Å, α = 68.64(2)°, β = 77.15(2)°,γ = 68.00(2)°, V = 1541.6(7) Å3, Z = 2; [11](ClO4), monoclinic, P21/c, a = 13.065(4) Å, b = 18.647(5) Å, c = 16.276(4) Å, β = 116.59(2)°, V = 3546(3) Å3, Z = 4. In both structures, one of the phenyl rings of (C N N-dpp) is nearly parallel with the nitrogen base ligand, which is perpendicular to the mean plane defined by the atoms N(1), N(2), C(13), and Pt. The photoluminescent properties of 7 and complexes with covalently linked organic quenchers are described. | en_US |
dc.language | eng | en_US |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html | en_US |
dc.relation.ispartof | Journal of the American Chemical Society | en_US |
dc.title | Covalently linked donor-acceptor cyclometalated platinum(II) complexes. Structure and luminescent properties | en_US |
dc.type | Article | en_US |
dc.identifier.email | Che, CM:cmche@hku.hk | en_US |
dc.identifier.authority | Che, CM=rp00670 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1021/ja00077a025 | - |
dc.identifier.scopus | eid_2-s2.0-0001123123 | en_US |
dc.identifier.volume | 115 | en_US |
dc.identifier.issue | 24 | en_US |
dc.identifier.spage | 11245 | en_US |
dc.identifier.epage | 11253 | en_US |
dc.identifier.isi | WOS:A1993ML59000025 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Chan, CW=7404814723 | en_US |
dc.identifier.scopusauthorid | Lai, TF=7202203523 | en_US |
dc.identifier.scopusauthorid | Che, CM=7102442791 | en_US |
dc.identifier.scopusauthorid | Peng, SM=35464852200 | en_US |
dc.identifier.issnl | 0002-7863 | - |