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Article: Synthesis, Characterization, and Crystal Structures of a Series of Osmium−Rhodium Mixed-Metal Carbonyl Clusters:  [N(PPh3)2][Os6Rh(μ-H)2(CO)20], [Os6Rh(μ-H)7(μ-CO)(CO)18], [Os6Rh(μ-H)9(CO)18], and [Os3Rh(μ-CO)(CO)9(μ4-η2-PhC2Ph)(μ2-η1:η2-PhC2PhH)]

TitleSynthesis, Characterization, and Crystal Structures of a Series of Osmium−Rhodium Mixed-Metal Carbonyl Clusters:  [N(PPh3)2][Os6Rh(μ-H)2(CO)20], [Os6Rh(μ-H)7(μ-CO)(CO)18], [Os6Rh(μ-H)9(CO)18], and [Os3Rh(μ-CO)(CO)9(μ4-η2-PhC2Ph)(μ2-η1:η2-PhC2PhH)]
Authors
Issue Date1999
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/organometallics
Citation
Organometallics, 1999, v. 18 n. 17, p. 3474-3481 How to Cite?
AbstractThe reaction between [N(PPh3)2][Os3(μ-H)(CO)11] and [Rh(COD)2][SbF6] (COD = cycloocta-1,5-diene) yields the known cluster [Os3Rh(μ-H)3(CO)10(COD)] (1) and the new complex [N(PPh3)2][Os6Rh(μ-H)2(CO)20] (2). Subsequent reaction of 1 with CO gas in CH2Cl2 produces [Os3Rh(μ-H)3(CO)12] (4). Compound 1 also reacts with 1 equiv of [N(PPh3)2][Os3(μ-H)(CO)11] to give 2. Hydrogenation of 1 results in the hydrogen-rich cluster [Os6Rh(μ-H)9(CO)18] (5) in moderate yield. Reaction of 1 with diphenylacetylene affords [Os3Rh(μ-CO)(CO)9(μ4-η2-PhC2Ph)(μ2-η1:η2-PhC2PhH)] (6). On the other hand, the unsaturated cluster [Os3(μ-H)2(CO)10] reacts with [Rh(dppm)2][BF4] (dppm = bis(diphenylphosphino)methane) to give [Os6Rh(μ-H)7(μ-CO)(CO)18] (3) in good yield. The crystal structures of 2, 3, 5, and 6 were determined. Clusters, 2, 3, and 5 consist of a central rhodium atom linking two triosmium units; however, the rhodium atom of 2 bridges two triosmium units, while 3 and 5 possess a sandwich-type structure. Complex 6 has a butterfly arrangement of three osmium atoms and one rhodium atom which contains a diphenylacetylene fragment in a μ4-η2 arrangement and an alkenyl group in a μ2-η1:η2 configuration.
Persistent Identifierhttp://hdl.handle.net/10722/69308
ISSN
2015 Impact Factor: 4.186
2015 SCImago Journal Rankings: 2.043
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWong, WTen_HK
dc.date.accessioned2010-09-06T06:12:28Z-
dc.date.available2010-09-06T06:12:28Z-
dc.date.issued1999en_HK
dc.identifier.citationOrganometallics, 1999, v. 18 n. 17, p. 3474-3481en_HK
dc.identifier.issn0276-7333en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69308-
dc.description.abstractThe reaction between [N(PPh3)2][Os3(μ-H)(CO)11] and [Rh(COD)2][SbF6] (COD = cycloocta-1,5-diene) yields the known cluster [Os3Rh(μ-H)3(CO)10(COD)] (1) and the new complex [N(PPh3)2][Os6Rh(μ-H)2(CO)20] (2). Subsequent reaction of 1 with CO gas in CH2Cl2 produces [Os3Rh(μ-H)3(CO)12] (4). Compound 1 also reacts with 1 equiv of [N(PPh3)2][Os3(μ-H)(CO)11] to give 2. Hydrogenation of 1 results in the hydrogen-rich cluster [Os6Rh(μ-H)9(CO)18] (5) in moderate yield. Reaction of 1 with diphenylacetylene affords [Os3Rh(μ-CO)(CO)9(μ4-η2-PhC2Ph)(μ2-η1:η2-PhC2PhH)] (6). On the other hand, the unsaturated cluster [Os3(μ-H)2(CO)10] reacts with [Rh(dppm)2][BF4] (dppm = bis(diphenylphosphino)methane) to give [Os6Rh(μ-H)7(μ-CO)(CO)18] (3) in good yield. The crystal structures of 2, 3, 5, and 6 were determined. Clusters, 2, 3, and 5 consist of a central rhodium atom linking two triosmium units; however, the rhodium atom of 2 bridges two triosmium units, while 3 and 5 possess a sandwich-type structure. Complex 6 has a butterfly arrangement of three osmium atoms and one rhodium atom which contains a diphenylacetylene fragment in a μ4-η2 arrangement and an alkenyl group in a μ2-η1:η2 configuration.-
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/organometallicsen_HK
dc.relation.ispartofOrganometallicsen_HK
dc.titleSynthesis, Characterization, and Crystal Structures of a Series of Osmium−Rhodium Mixed-Metal Carbonyl Clusters:  [N(PPh3)2][Os6Rh(μ-H)2(CO)20], [Os6Rh(μ-H)7(μ-CO)(CO)18], [Os6Rh(μ-H)9(CO)18], and [Os3Rh(μ-CO)(CO)9(μ4-η2-PhC2Ph)(μ2-η1:η2-PhC2PhH)]en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0276-7333&volume=18&spage=3474&epage=3481&date=1999&atitle=Synthesis,+characterization,+and+crystal+structures+of+a+series+of+osmium-rhodium+mixed-metal+carbonyl+clusters:++[N(PPh3)2][Os6Rh(m-H)2(CO)20],+[Os6Rh(m-H)7(m-CO)(CO)18],+[Os6Rh(m-H)9(CO)18],+and+[Os3en_HK
dc.identifier.emailWong, WT: wtwong@hku.hken_HK
dc.identifier.authorityWong, WT=rp00811en_HK
dc.identifier.doi10.1021/om9900925-
dc.identifier.scopuseid_2-s2.0-0001531111-
dc.identifier.hkuros49862en_HK
dc.identifier.volume18-
dc.identifier.issue17-
dc.identifier.spage3474-
dc.identifier.epage3481-
dc.identifier.isiWOS:000082249400030-
dc.publisher.placeUnited States-

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