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Article: Synthesis, characterisation, crystal structures and reactivity of a series of ruthenium-cobalt mixed-metal nitrido carbonyl clusters with iodide ligands
Title | Synthesis, characterisation, crystal structures and reactivity of a series of ruthenium-cobalt mixed-metal nitrido carbonyl clusters with iodide ligands |
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Authors | |
Keywords | 15N-NMR spectroscopy Cluster Iodide Nitrido Ruthenium-cobalt |
Issue Date | 2001 |
Publisher | Elsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jorganchem |
Citation | Journal Of Organometallic Chemistry, 2001, v. 626 n. 1-2, p. 125-138 How to Cite? |
Abstract | Reaction of [Ru3(μ-H)2(CO)9(μ3-NOMe)] (1) with two equivalents of [Cp*Co(CO)I2] (Cp*=η5-C5Me5) in refluxing THF resulted in the isolation of four new heterometallic tetranuclear nitrido clusters, namely [Ru3CoH(μ-H)(CO)6(Cp*){μ-η 2-C(OMe)O}(μ4-N)(μ-I)2] (2), [Ru3Co(μ-H)2(CO)6(Cp*){μ-η 2-C(OMe)O}(μ4-N)I(μ-I)] (3), [Ru3Co(μ-H)2(CO)6(Cp*){μ-η 2-C(OMe)O}(μ4-N)I(μ-I)] (4) and [Ru3Co(μ-H)2(CO)8(η5-C 5Me5)(μ4-N)(μ-I)] (5), together with a triruthenium nitrene cluster [Ru3(μ-H)3(CO)8(μ3-NOMe)I] (6) in moderate yields. The first four clusters have either a chain (2) or a spiked triangle (3-5) metal skeleton with the central nitrido atom capping all four metal atoms; alternatively, these four clusters can also be viewed as having a highly distorted butterfly arrangement. Clusters 2, 3 and 4 are isomers with different ligand dispositions. The hinge and an Ru-Ru wing-edge are missing in 2, whereas a wing-edge is lost in each of 3 and 4 (Ru-Ru) and 5 (Ru-Co). Opening up the hinge metal-metal bond has a significant effect upon the nitrido chemical shift in the 15N-NMR spectrum. Clusters 3 and 4 differ from each other in the coordination site of a terminal iodide ligand, and both clusters are inter-convertible under vigorous conditions. Cluster 6 is a trihydrido nitrene cluster with a terminal iodide ligand. 15N-NMR studies were performed in order to investigate the environment of the nitrogen atoms in these nitrido and nitrene clusters. © 2001 Elsevier Science B.V. |
Persistent Identifier | http://hdl.handle.net/10722/69868 |
ISSN | 2023 Impact Factor: 2.1 2023 SCImago Journal Rankings: 0.359 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ho, ENM | en_HK |
dc.contributor.author | Wong, WT | en_HK |
dc.date.accessioned | 2010-09-06T06:17:34Z | - |
dc.date.available | 2010-09-06T06:17:34Z | - |
dc.date.issued | 2001 | en_HK |
dc.identifier.citation | Journal Of Organometallic Chemistry, 2001, v. 626 n. 1-2, p. 125-138 | en_HK |
dc.identifier.issn | 0022-328X | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/69868 | - |
dc.description.abstract | Reaction of [Ru3(μ-H)2(CO)9(μ3-NOMe)] (1) with two equivalents of [Cp*Co(CO)I2] (Cp*=η5-C5Me5) in refluxing THF resulted in the isolation of four new heterometallic tetranuclear nitrido clusters, namely [Ru3CoH(μ-H)(CO)6(Cp*){μ-η 2-C(OMe)O}(μ4-N)(μ-I)2] (2), [Ru3Co(μ-H)2(CO)6(Cp*){μ-η 2-C(OMe)O}(μ4-N)I(μ-I)] (3), [Ru3Co(μ-H)2(CO)6(Cp*){μ-η 2-C(OMe)O}(μ4-N)I(μ-I)] (4) and [Ru3Co(μ-H)2(CO)8(η5-C 5Me5)(μ4-N)(μ-I)] (5), together with a triruthenium nitrene cluster [Ru3(μ-H)3(CO)8(μ3-NOMe)I] (6) in moderate yields. The first four clusters have either a chain (2) or a spiked triangle (3-5) metal skeleton with the central nitrido atom capping all four metal atoms; alternatively, these four clusters can also be viewed as having a highly distorted butterfly arrangement. Clusters 2, 3 and 4 are isomers with different ligand dispositions. The hinge and an Ru-Ru wing-edge are missing in 2, whereas a wing-edge is lost in each of 3 and 4 (Ru-Ru) and 5 (Ru-Co). Opening up the hinge metal-metal bond has a significant effect upon the nitrido chemical shift in the 15N-NMR spectrum. Clusters 3 and 4 differ from each other in the coordination site of a terminal iodide ligand, and both clusters are inter-convertible under vigorous conditions. Cluster 6 is a trihydrido nitrene cluster with a terminal iodide ligand. 15N-NMR studies were performed in order to investigate the environment of the nitrogen atoms in these nitrido and nitrene clusters. © 2001 Elsevier Science B.V. | en_HK |
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 | 15N-NMR spectroscopy | en_HK |
dc.subject | Cluster | en_HK |
dc.subject | Iodide | en_HK |
dc.subject | Nitrido | en_HK |
dc.subject | Ruthenium-cobalt | en_HK |
dc.title | Synthesis, characterisation, crystal structures and reactivity of a series of ruthenium-cobalt mixed-metal nitrido carbonyl clusters with iodide ligands | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-328X&volume=626&spage=125&epage=138&date=2001&atitle=Synthesis,+characterisation,+crystal+structures+and+reactivity+of+a+series+of+ruthenium-cobalt+mixed-metal+nitrido+carbonyl+clusters+with+iodide+ligands | en_HK |
dc.identifier.email | Wong, WT: wtwong@hku.hk | en_HK |
dc.identifier.authority | Wong, WT=rp00811 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/S0022-328X(01)00675-1 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0038245309 | en_HK |
dc.identifier.hkuros | 62648 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0038245309&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 626 | en_HK |
dc.identifier.issue | 1-2 | en_HK |
dc.identifier.spage | 125 | en_HK |
dc.identifier.epage | 138 | en_HK |
dc.identifier.isi | WOS:000168607600019 | - |
dc.publisher.place | Switzerland | en_HK |
dc.identifier.scopusauthorid | Ho, ENM=7102724598 | en_HK |
dc.identifier.scopusauthorid | Wong, WT=7403973084 | en_HK |
dc.identifier.issnl | 0022-328X | - |