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Article: Some remarkable reactions of the alkylidyne cluster (Os3(n-H)2(CO)9(n3-CNC10H8N)) with electrophiles. Crystal and molecular structures of a novel water-soluble dicationic cluster complex (Os3(n-H)3(CO)9(n3-CNC10

TitleSome remarkable reactions of the alkylidyne cluster (Os3(n-H)2(CO)9(n3-CNC10H8N)) with electrophiles. Crystal and molecular structures of a novel water-soluble dicationic cluster complex (Os3(n-H)3(CO)9(n3-CNC10
Authors
Issue Date1995
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/dalton
Citation
Journal of the Chemical Society Dalton Transactions, 1995, n. 24, p. 3995-3999 How to Cite?
AbstractProtonation of the µ3-alkylidyne cluster [Os3(µ-H)2(CO)9(µ3-CNC5H4C5H4N)]1(NC5H4C5H4N = 4,4′-bipyridine) took place in two consecutive steps upon treatment with strong protonic acids such as HBF4 or CF3CO2H in dichloromethane. Initial protonation occurs at the organic ligand to give quantitatively the monocationic dihydrido species [Os3(µ-H)2(CO)9(µ3-CNC5H4C5H4NH)]+2. In the presence of an excess of acid a second protonation takes place at the metal core and 2 is rapidly converted into a water-soluble dicationic trihydrido cluster [Os3(µ-H)3(CO)9(µ3-CNC5H4C5H4NH)]2+3. The crystal structure of the bis(tetrafluoroborate) salt as its monohydrate has been determined, and reveals the presence of extensive hydrogen bonding. The formation of complexes 1–3 is found to be reversible by successive protonation and deprotonation processes, and is reminiscent of typical acid–base equilibria. On the other hand, the reaction of 1 with [Me3O]+BF4– in dichloromethane afforded the N-methylated derivative, [Os3(µ-H)2(CO)9(µ3-CNC5H4C5H4NMe)]+4, which gave another dicationic complex [Os3(µ-H)3(CO)9(µ3-CNC5H4C5H4NMe)]2+5 on protonation with HBF4 or CF3CO2H. Similar to 3, complex 5 is very soluble in water.
Persistent Identifierhttp://hdl.handle.net/10722/70225
ISSN
2002 Impact Factor: 3.023
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWong, WYen_HK
dc.contributor.authorWong, WTen_HK
dc.date.accessioned2010-09-06T06:20:53Z-
dc.date.available2010-09-06T06:20:53Z-
dc.date.issued1995en_HK
dc.identifier.citationJournal of the Chemical Society Dalton Transactions, 1995, n. 24, p. 3995-3999en_HK
dc.identifier.issn1472-7773en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70225-
dc.description.abstractProtonation of the µ3-alkylidyne cluster [Os3(µ-H)2(CO)9(µ3-CNC5H4C5H4N)]1(NC5H4C5H4N = 4,4′-bipyridine) took place in two consecutive steps upon treatment with strong protonic acids such as HBF4 or CF3CO2H in dichloromethane. Initial protonation occurs at the organic ligand to give quantitatively the monocationic dihydrido species [Os3(µ-H)2(CO)9(µ3-CNC5H4C5H4NH)]+2. In the presence of an excess of acid a second protonation takes place at the metal core and 2 is rapidly converted into a water-soluble dicationic trihydrido cluster [Os3(µ-H)3(CO)9(µ3-CNC5H4C5H4NH)]2+3. The crystal structure of the bis(tetrafluoroborate) salt as its monohydrate has been determined, and reveals the presence of extensive hydrogen bonding. The formation of complexes 1–3 is found to be reversible by successive protonation and deprotonation processes, and is reminiscent of typical acid–base equilibria. On the other hand, the reaction of 1 with [Me3O]+BF4– in dichloromethane afforded the N-methylated derivative, [Os3(µ-H)2(CO)9(µ3-CNC5H4C5H4NMe)]+4, which gave another dicationic complex [Os3(µ-H)3(CO)9(µ3-CNC5H4C5H4NMe)]2+5 on protonation with HBF4 or CF3CO2H. Similar to 3, complex 5 is very soluble in water.-
dc.languageengen_HK
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/daltonen_HK
dc.relation.ispartofJournal of the Chemical Society Dalton Transactionsen_HK
dc.titleSome remarkable reactions of the alkylidyne cluster (Os3(n-H)2(CO)9(n3-CNC10H8N)) with electrophiles. Crystal and molecular structures of a novel water-soluble dicationic cluster complex (Os3(n-H)3(CO)9(n3-CNC10en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1472-7773&volume=No24&spage=3995&epage=3999&date=1995&atitle=Some+remarkable+reactions+of+the+alkylidyne+cluster+(Os3(n-H)2(CO)9(n3-CNC10H8N))+with+electrophiles.+Crystal+and+molecular+structures+of+a+novel+water-soluble+dicationic+cluster+complex+(Os3(n-H)3(CO)9(n3-CNC10en_HK
dc.identifier.emailWong, WT: wtwong@hku.hken_HK
dc.identifier.authorityWong, WT=rp00811en_HK
dc.identifier.doi10.1039/DT9950003995-
dc.identifier.hkuros14652en_HK
dc.identifier.issue24-
dc.identifier.isiWOS:A1995TL80100006-

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