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Article: Synthesis and molecular structure of hexaruthenium clusters containing unsaturated ring systems derived from 1-ethynylcyclopentanol, 1-ethynylcycloheptanol and 1-ethynylcyclooctanol

TitleSynthesis and molecular structure of hexaruthenium clusters containing unsaturated ring systems derived from 1-ethynylcyclopentanol, 1-ethynylcycloheptanol and 1-ethynylcyclooctanol
Authors
KeywordsRuthenium
Carbonyl
Clusters
Alkynes
Carbides
Issue Date1999
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jorganchem
Citation
Journal of Organometallic Chemistry, 1999, v. 589, p. 198-212 How to Cite?
AbstractSix hexaruthenium compounds which are identified as [Ru6C(CO)13(μ-CO){μ3-η1,η2,η3-C5H7CCC(H)C5H8}] 1 (12%), [Ru6(CO)12(μ-CO)2{μ4-η1,η1,η2,η4-CC(H)C5H6}2] 2 (8%), [Ru6C(CO)14(μ-CO){μ2-η1,η3-C(H)C7H11}] 3 (8%), [Ru6(CO)14{μ4-η1,η1η2,η4-CC(H)C7H10}2] 4 (10%), [Ru6C(CO)13(μ-CO){μ3-η1,η2,η3-C8H12C(H)C(H)C(H)C(OH)C8H14}] 5 (16%), and [Ru6(CO)14{μ4-η1,η1η2,η4-CC(H)C8H12}2] 6 (8%) have been synthesised by reaction of HC≡C(C5H8OH), HC≡C(C7H12OH) and HC≡C(C8H14OH), respectively, with triruthenium dodecacarbonyl in cyclohexane under refluxing conditions. All these compounds have been fully characterised by spectroscopic and X-ray diffraction methods. The structures of 1, 3 and 5 are based on a Ru6 octahedral skeleton containing a μ6-carbide. Both clusters 1 and 5 involve the coupling of two functionalized alkyne molecules to give an unusual hexatetraene chain with the elimination of water molecules. Complex 3 consists of one alkyne moiety bonded to a Ru3 triangular face via one σ and a π-allyl bond. An interesting feature in clusters 2, 4 and 6 is the formation of a metallacyclic five-membered ring with a μ4-η1,η1,η2,η4 mode, which is derived from the C≡C triple bond and C≡H bond activations. Reaction of [Ru3(CO)10(NCMe)2] with 1-ethynylcyclopentanol affords another new cluster, [Ru3(CO)9(μ-CO)(μ3-η1,η1,η2-HCCC5H8OH)] 7, which consists of an alkyne ligand bound to the triruthenium cluster unit via a typical μ3-(η2-||) coordination mode.
Persistent Identifierhttp://hdl.handle.net/10722/69184
ISSN
2015 Impact Factor: 2.336
2015 SCImago Journal Rankings: 0.732

 

DC FieldValueLanguage
dc.contributor.authorLau, CSWen_HK
dc.contributor.authorWong, WTen_HK
dc.date.accessioned2010-09-06T06:11:20Z-
dc.date.available2010-09-06T06:11:20Z-
dc.date.issued1999en_HK
dc.identifier.citationJournal of Organometallic Chemistry, 1999, v. 589, p. 198-212en_HK
dc.identifier.issn0022-328Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/69184-
dc.description.abstractSix hexaruthenium compounds which are identified as [Ru6C(CO)13(μ-CO){μ3-η1,η2,η3-C5H7CCC(H)C5H8}] 1 (12%), [Ru6(CO)12(μ-CO)2{μ4-η1,η1,η2,η4-CC(H)C5H6}2] 2 (8%), [Ru6C(CO)14(μ-CO){μ2-η1,η3-C(H)C7H11}] 3 (8%), [Ru6(CO)14{μ4-η1,η1η2,η4-CC(H)C7H10}2] 4 (10%), [Ru6C(CO)13(μ-CO){μ3-η1,η2,η3-C8H12C(H)C(H)C(H)C(OH)C8H14}] 5 (16%), and [Ru6(CO)14{μ4-η1,η1η2,η4-CC(H)C8H12}2] 6 (8%) have been synthesised by reaction of HC≡C(C5H8OH), HC≡C(C7H12OH) and HC≡C(C8H14OH), respectively, with triruthenium dodecacarbonyl in cyclohexane under refluxing conditions. All these compounds have been fully characterised by spectroscopic and X-ray diffraction methods. The structures of 1, 3 and 5 are based on a Ru6 octahedral skeleton containing a μ6-carbide. Both clusters 1 and 5 involve the coupling of two functionalized alkyne molecules to give an unusual hexatetraene chain with the elimination of water molecules. Complex 3 consists of one alkyne moiety bonded to a Ru3 triangular face via one σ and a π-allyl bond. An interesting feature in clusters 2, 4 and 6 is the formation of a metallacyclic five-membered ring with a μ4-η1,η1,η2,η4 mode, which is derived from the C≡C triple bond and C≡H bond activations. Reaction of [Ru3(CO)10(NCMe)2] with 1-ethynylcyclopentanol affords another new cluster, [Ru3(CO)9(μ-CO)(μ3-η1,η1,η2-HCCC5H8OH)] 7, which consists of an alkyne ligand bound to the triruthenium cluster unit via a typical μ3-(η2-||) coordination mode.-
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.subjectRuthenium-
dc.subjectCarbonyl-
dc.subjectClusters-
dc.subjectAlkynes-
dc.subjectCarbides-
dc.titleSynthesis and molecular structure of hexaruthenium clusters containing unsaturated ring systems derived from 1-ethynylcyclopentanol, 1-ethynylcycloheptanol and 1-ethynylcyclooctanolen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-328X&volume=589&spage=198&epage=212&date=1999&atitle=Synthesis+and+molecular+structure+of+hexaruthenium+clusters+containing+unsaturated+ring+systems+derived+from+l-ethynylcyclopentanol,+l-ethynylcycloheptanol+and+l-ethynylcyclooctanolen_HK
dc.identifier.emailWong, WT: wtwong@hku.hken_HK
dc.identifier.authorityWong, WT=rp00811en_HK
dc.identifier.doi10.1016/S0022-328X(99)00403-9-
dc.identifier.hkuros53682en_HK
dc.identifier.volume589-
dc.identifier.spage198-
dc.identifier.epage212-
dc.publisher.placeSwitzerland-

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