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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
Title | Synthesis and molecular structure of hexaruthenium clusters containing unsaturated ring systems derived from 1-ethynylcyclopentanol, 1-ethynylcycloheptanol and 1-ethynylcyclooctanol |
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Authors | |
Keywords | Ruthenium Carbonyl Clusters Alkynes Carbides |
Issue Date | 1999 |
Publisher | Elsevier 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? |
Abstract | Six 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 Identifier | http://hdl.handle.net/10722/69184 |
ISSN | 2021 Impact Factor: 2.345 2020 SCImago Journal Rankings: 0.484 |
DC Field | Value | Language |
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dc.contributor.author | Lau, CSW | en_HK |
dc.contributor.author | Wong, WT | en_HK |
dc.date.accessioned | 2010-09-06T06:11:20Z | - |
dc.date.available | 2010-09-06T06:11:20Z | - |
dc.date.issued | 1999 | en_HK |
dc.identifier.citation | Journal of Organometallic Chemistry, 1999, v. 589, p. 198-212 | en_HK |
dc.identifier.issn | 0022-328X | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/69184 | - |
dc.description.abstract | Six 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.language | eng | en_HK |
dc.publisher | Elsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jorganchem | en_HK |
dc.relation.ispartof | Journal of Organometallic Chemistry | en_HK |
dc.subject | Ruthenium | - |
dc.subject | Carbonyl | - |
dc.subject | Clusters | - |
dc.subject | Alkynes | - |
dc.subject | Carbides | - |
dc.title | Synthesis and molecular structure of hexaruthenium clusters containing unsaturated ring systems derived from 1-ethynylcyclopentanol, 1-ethynylcycloheptanol and 1-ethynylcyclooctanol | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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-ethynylcyclooctanol | en_HK |
dc.identifier.email | Wong, WT: wtwong@hku.hk | en_HK |
dc.identifier.authority | Wong, WT=rp00811 | en_HK |
dc.identifier.doi | 10.1016/S0022-328X(99)00403-9 | - |
dc.identifier.scopus | eid_2-s2.0-0347244394 | - |
dc.identifier.hkuros | 53682 | en_HK |
dc.identifier.volume | 589 | - |
dc.identifier.spage | 198 | - |
dc.identifier.epage | 212 | - |
dc.publisher.place | Switzerland | - |
dc.identifier.issnl | 0022-328X | - |