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Article: Synthesis and molecular structures of monooxo aryl complexes of osmium(VI)

TitleSynthesis and molecular structures of monooxo aryl complexes of osmium(VI)
Authors
KeywordsOsmium(VI)
Oxo aryl complexes
Issue Date2001
PublisherN R C Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cjc
Citation
Canadian Journal Of Chemistry, 2001, v. 79 n. 5-6, p. 607-612 How to Cite?
AbstractReaction of [OsO4] with C7H7MgBr (C7H7 = 2-methylphenyl) followed by column chromatography afforded the reported osmium tetraaryl [Os(C7H7)4] along with the oxo-osmium(VI) ([OsO(C7H7)4]) (1) (13%) and the dioxoosmium(VI) ([OsO2(C7H7)2]) (2) (25%) complexes. Treatment of [OsO4] with C8H9MgBr (C8H9 = 2,5-dimethylphenyl) gave a mixture of [Os(C8H9)4] (3) (34%) and [OsO(C8H9)4] (4) (4%) while that with C8H9OMgBr (C8H9O = 4-methoxy-2-methylphenyl) afforded [OsO(C8H9O)4] (5) in 20% yield. Oxidation of 3 with 3-chloroperoxybenzoic acid afforded 4 in good yield. The solid-state structures of 1 and 4 have been established by X-ray crystallography. Crystals of 1 are tetragonal with a = 13.080(1) and c = 6.6506(5) Å, V = 1137.9(1) Å3, Z = 2, and space group of P4/n; while those of 4 are tetragonal with a = 13.593(2) and c = 7.377(2) Å, V = 1363.0(5) Å3, Z = 4, and space group of P4/n. The geometry around osmium in both complexes is square pyramidal with the oxo ligand occupying apical position. The Os - O and Os - C distances in 1 are 1.652(2) and 2.084(1) Å, respectively, while those in 4 are 1.688(7) and 2.088(4) Å, respectively. The cyclic voltammograms of the monooxo aryl osmium(VI) compounds show reversible Os(VI/V) couple at around -1.4 V vs. ferrocene/ferrocenium couple.
Persistent Identifierhttp://hdl.handle.net/10722/42354
ISSN
2015 Impact Factor: 1.003
2015 SCImago Journal Rankings: 0.364
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLau, MKen_HK
dc.contributor.authorChim, JLCen_HK
dc.contributor.authorWong, WTen_HK
dc.contributor.authorWilliams, IDen_HK
dc.contributor.authorLeung, WHen_HK
dc.date.accessioned2007-01-29T08:47:37Z-
dc.date.available2007-01-29T08:47:37Z-
dc.date.issued2001en_HK
dc.identifier.citationCanadian Journal Of Chemistry, 2001, v. 79 n. 5-6, p. 607-612en_HK
dc.identifier.issn0008-4042en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42354-
dc.description.abstractReaction of [OsO4] with C7H7MgBr (C7H7 = 2-methylphenyl) followed by column chromatography afforded the reported osmium tetraaryl [Os(C7H7)4] along with the oxo-osmium(VI) ([OsO(C7H7)4]) (1) (13%) and the dioxoosmium(VI) ([OsO2(C7H7)2]) (2) (25%) complexes. Treatment of [OsO4] with C8H9MgBr (C8H9 = 2,5-dimethylphenyl) gave a mixture of [Os(C8H9)4] (3) (34%) and [OsO(C8H9)4] (4) (4%) while that with C8H9OMgBr (C8H9O = 4-methoxy-2-methylphenyl) afforded [OsO(C8H9O)4] (5) in 20% yield. Oxidation of 3 with 3-chloroperoxybenzoic acid afforded 4 in good yield. The solid-state structures of 1 and 4 have been established by X-ray crystallography. Crystals of 1 are tetragonal with a = 13.080(1) and c = 6.6506(5) Å, V = 1137.9(1) Å3, Z = 2, and space group of P4/n; while those of 4 are tetragonal with a = 13.593(2) and c = 7.377(2) Å, V = 1363.0(5) Å3, Z = 4, and space group of P4/n. The geometry around osmium in both complexes is square pyramidal with the oxo ligand occupying apical position. The Os - O and Os - C distances in 1 are 1.652(2) and 2.084(1) Å, respectively, while those in 4 are 1.688(7) and 2.088(4) Å, respectively. The cyclic voltammograms of the monooxo aryl osmium(VI) compounds show reversible Os(VI/V) couple at around -1.4 V vs. ferrocene/ferrocenium couple.en_HK
dc.format.extent1397726 bytes-
dc.format.extent25600 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherN R C Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cjcen_HK
dc.relation.ispartofCanadian Journal of Chemistryen_HK
dc.rightsCanadian Journal of Chemistry. Copyright © N R C Research Press.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectOsmium(VI)en_HK
dc.subjectOxo aryl complexesen_HK
dc.titleSynthesis and molecular structures of monooxo aryl complexes of osmium(VI)en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0008-4042&volume=79&issue=5/6&spage=607&epage=612&date=2001&atitle=Synthesis+and+molecular+structures+of+monooxo+aryl+complexes+of+osmium(VI)en_HK
dc.identifier.emailWong, WT: wtwong@hku.hken_HK
dc.identifier.authorityWong, WT=rp00811en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1139/cjc-79-5-6-607en_HK
dc.identifier.scopuseid_2-s2.0-0034886103en_HK
dc.identifier.hkuros62802-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034886103&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume79en_HK
dc.identifier.issue5-6en_HK
dc.identifier.spage607en_HK
dc.identifier.epage612en_HK
dc.identifier.isiWOS:000170070900021-
dc.publisher.placeCanadaen_HK
dc.identifier.scopusauthoridLau, MK=7102344959en_HK
dc.identifier.scopusauthoridChim, JLC=6602609380en_HK
dc.identifier.scopusauthoridWong, WT=7403973084en_HK
dc.identifier.scopusauthoridWilliams, ID=7201818926en_HK
dc.identifier.scopusauthoridLeung, WH=7201504510en_HK

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