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Article: Palladium(II) and platinum(II) analogues of luminescent diimine triangulo complexes supported by triply bridging sulfide ligands: Structural and spectroscopic comparisons

TitlePalladium(II) and platinum(II) analogues of luminescent diimine triangulo complexes supported by triply bridging sulfide ligands: Structural and spectroscopic comparisons
Authors
Issue Date2001
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/ic
Citation
Inorganic Chemistry, 2001, v. 40 n. 26, p. 6699-6704 How to Cite?
AbstractReaction of [M(L-L)Cl 2] [M = Pd, Pt; L-L = 4,4′-di-tert-butyl-2,2′-bipyridine ( tBu 2bpy), 4,4′-dimethylcarboxylate-2,2′-bipyridine ((CO 2Me) 2bpy), bis(diphenylphosphino)methane (dppm)] with Na 2S in refluxing methanol afforded [M 3( tBu 2bpy)3 (μ 3-S)2] 2+ [M = Pd (1a), Pt (2a)], [M 3((CO 2Me) 2bpy) 3 (μ 3-S) 2] 2+ [M = Pd (1b), Pt (2b)], and [Pt 3(dppm) 3 (μ 3-S) 2] 2+ (3) as perchlorate salts. X-ray crystal analysis revealed that 1a, 1b, 2a, and 3 have triangular M 3S 2 core structures. The three metal atoms in 1a, 2a, and 3 form virtual equilateral triangles with intramolecular Pd-Pd and Pt-Pt separations of 3.027(1)-3.065(1) and 3.104(1)-3.154(1) Å, respectively. An isosceles triangle of Pd 3 atoms is observed in the molecular structure of 1b. The 1MLCT absorption of 2a and 2b appears at 415 and 448 nm, respectively, in dichloromethane and is significantly red-shifted from the lowest energy absorption band of the Pd 3 analogues. Complex 1a exhibits weak photoluminescence in the solid state at 77 and 298 K (uncorrected λ max 760 and 730 nm, respectively) while the 77 K solid-state emission of 1b (uncorrected λ max 760 nm) is also weak. At 77 K, complexes 2a, 2b, and 3 display broad unstructured emissions at λ max 616-630 nm in the solid state. Ligand-field excited states are tentatively assigned for these emissions.
Persistent Identifierhttp://hdl.handle.net/10722/69882
ISSN
2015 Impact Factor: 4.82
2015 SCImago Journal Rankings: 1.873
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTzeng, BCen_HK
dc.contributor.authorChan, SCen_HK
dc.contributor.authorChan, MCWen_HK
dc.contributor.authorChe, CMen_HK
dc.contributor.authorCheung, KKen_HK
dc.contributor.authorPeng, SMen_HK
dc.date.accessioned2010-09-06T06:17:42Z-
dc.date.available2010-09-06T06:17:42Z-
dc.date.issued2001en_HK
dc.identifier.citationInorganic Chemistry, 2001, v. 40 n. 26, p. 6699-6704en_HK
dc.identifier.issn0020-1669en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69882-
dc.description.abstractReaction of [M(L-L)Cl 2] [M = Pd, Pt; L-L = 4,4′-di-tert-butyl-2,2′-bipyridine ( tBu 2bpy), 4,4′-dimethylcarboxylate-2,2′-bipyridine ((CO 2Me) 2bpy), bis(diphenylphosphino)methane (dppm)] with Na 2S in refluxing methanol afforded [M 3( tBu 2bpy)3 (μ 3-S)2] 2+ [M = Pd (1a), Pt (2a)], [M 3((CO 2Me) 2bpy) 3 (μ 3-S) 2] 2+ [M = Pd (1b), Pt (2b)], and [Pt 3(dppm) 3 (μ 3-S) 2] 2+ (3) as perchlorate salts. X-ray crystal analysis revealed that 1a, 1b, 2a, and 3 have triangular M 3S 2 core structures. The three metal atoms in 1a, 2a, and 3 form virtual equilateral triangles with intramolecular Pd-Pd and Pt-Pt separations of 3.027(1)-3.065(1) and 3.104(1)-3.154(1) Å, respectively. An isosceles triangle of Pd 3 atoms is observed in the molecular structure of 1b. The 1MLCT absorption of 2a and 2b appears at 415 and 448 nm, respectively, in dichloromethane and is significantly red-shifted from the lowest energy absorption band of the Pd 3 analogues. Complex 1a exhibits weak photoluminescence in the solid state at 77 and 298 K (uncorrected λ max 760 and 730 nm, respectively) while the 77 K solid-state emission of 1b (uncorrected λ max 760 nm) is also weak. At 77 K, complexes 2a, 2b, and 3 display broad unstructured emissions at λ max 616-630 nm in the solid state. Ligand-field excited states are tentatively assigned for these emissions.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/icen_HK
dc.relation.ispartofInorganic Chemistryen_HK
dc.titlePalladium(II) and platinum(II) analogues of luminescent diimine triangulo complexes supported by triply bridging sulfide ligands: Structural and spectroscopic comparisonsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0020-1669&volume=40&spage=6699&epage=6704&date=2001&atitle=Palladium(II)+and+Platinum(II)+analogues+of+luminescent+diimine+Triangulo+complexes+supported+by+triply+bridging+sulfide+ligands:++structural+and+spectroscopic+comparisonsen_HK
dc.identifier.emailChe, CM:cmche@hku.hken_HK
dc.identifier.authorityChe, CM=rp00670en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ic010891ren_HK
dc.identifier.pmid11735481-
dc.identifier.scopuseid_2-s2.0-0035904992en_HK
dc.identifier.hkuros71705en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035904992&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume40en_HK
dc.identifier.issue26en_HK
dc.identifier.spage6699en_HK
dc.identifier.epage6704en_HK
dc.identifier.isiWOS:000172749300024-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTzeng, BC=7003648630en_HK
dc.identifier.scopusauthoridChan, SC=7404256345en_HK
dc.identifier.scopusauthoridChan, MCW=7402598116en_HK
dc.identifier.scopusauthoridChe, CM=7102442791en_HK
dc.identifier.scopusauthoridCheung, KK=7402406613en_HK
dc.identifier.scopusauthoridPeng, SM=35464852200en_HK

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