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Article: Syntheses, electrochemistry and reactivities of pyridine amide complexes of chromium(III) and manganese(III)

TitleSyntheses, electrochemistry and reactivities of pyridine amide complexes of chromium(III) and manganese(III)
Authors
Issue Date1991
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, 1991 n. 4, p. 1071-1076 How to Cite?
AbstractReactions of anhydrous CrCl3 with H2bpb and H2bpc [H2bpb = 1,2-bis(pyridine-2-carboxamido)benzene; H2bpc = 4,5-dichloro-1,2-bis(pyridine-2-carboxamido)benzene] in dimethylformamide and manganese(III) acetate with H2bpc in methanol, yielded the respective [CrIII(bpb)Cl]·xH2O, [CrIII(bpc)Cl]·H2O and [MnIII(bpc)(O2CMe)] complexes. The electrochemistry of the chromium(III) amide complexes has been studied by cyclic voltammetry. They exhibit reversible oxidation couples with E°values ranging from 0.28 to 0.80 V vs. ferrocenium-ferrocene. Except for [CrIII(bpb)(CN)2]- which has a quasireversible reduction couple at -1.97 V, the electrochemical reductions are irreversible. The complexes [CrIII(bpb)(H2O)2]ClO4, [CrIII(bpb)Cl(MeOH)] and [MnIII(bpc)(O2CMe)] have been shown to catalyse olefin epoxidation by iodosobenzene. With [Mn(bpc)(O2CMe)], catalytic oxidation of alkanes by PhIO has also been observed. An oxygen-rebound mechanism involving a Mnv=O or a Crv=O intermediate is proposed for the PhIO oxidation reactions.
Persistent Identifierhttp://hdl.handle.net/10722/168195
ISSN
2002 Impact Factor: 3.023
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLeung, WHen_US
dc.contributor.authorMa, JXen_US
dc.contributor.authorYam, VWWen_US
dc.contributor.authorChe, CMen_US
dc.contributor.authorPoon, Cen_US
dc.date.accessioned2012-10-08T03:16:09Z-
dc.date.available2012-10-08T03:16:09Z-
dc.date.issued1991en_US
dc.identifier.citationJournal Of The Chemical Society, Dalton Transactions, 1991 n. 4, p. 1071-1076en_US
dc.identifier.issn1472-7773en_US
dc.identifier.urihttp://hdl.handle.net/10722/168195-
dc.description.abstractReactions of anhydrous CrCl3 with H2bpb and H2bpc [H2bpb = 1,2-bis(pyridine-2-carboxamido)benzene; H2bpc = 4,5-dichloro-1,2-bis(pyridine-2-carboxamido)benzene] in dimethylformamide and manganese(III) acetate with H2bpc in methanol, yielded the respective [CrIII(bpb)Cl]·xH2O, [CrIII(bpc)Cl]·H2O and [MnIII(bpc)(O2CMe)] complexes. The electrochemistry of the chromium(III) amide complexes has been studied by cyclic voltammetry. They exhibit reversible oxidation couples with E°values ranging from 0.28 to 0.80 V vs. ferrocenium-ferrocene. Except for [CrIII(bpb)(CN)2]- which has a quasireversible reduction couple at -1.97 V, the electrochemical reductions are irreversible. The complexes [CrIII(bpb)(H2O)2]ClO4, [CrIII(bpb)Cl(MeOH)] and [MnIII(bpc)(O2CMe)] have been shown to catalyse olefin epoxidation by iodosobenzene. With [Mn(bpc)(O2CMe)], catalytic oxidation of alkanes by PhIO has also been observed. An oxygen-rebound mechanism involving a Mnv=O or a Crv=O intermediate is proposed for the PhIO oxidation reactions.en_US
dc.languageengen_US
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/daltonen_US
dc.relation.ispartofJournal of the Chemical Society, Dalton Transactionsen_US
dc.titleSyntheses, electrochemistry and reactivities of pyridine amide complexes of chromium(III) and manganese(III)en_US
dc.typeArticleen_US
dc.identifier.emailYam, VWW:wwyam@hku.hken_US
dc.identifier.emailChe, CM:cmche@hku.hken_US
dc.identifier.authorityYam, VWW=rp00822en_US
dc.identifier.authorityChe, CM=rp00670en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1039/DT9910001071en_US
dc.identifier.scopuseid_2-s2.0-37049073388en_US
dc.identifier.issue4en_US
dc.identifier.spage1071en_US
dc.identifier.epage1076en_US
dc.identifier.isiWOS:A1991FG57200019-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLeung, WH=7201504510en_US
dc.identifier.scopusauthoridMa, JX=27168050700en_US
dc.identifier.scopusauthoridYam, VWW=18539304700en_US
dc.identifier.scopusauthoridChe, CM=7102442791en_US
dc.identifier.scopusauthoridPoon, C=7202673504en_US

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