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Novel Scorpionate and Pyrazole Dioxovanadium Complexes, Catalysts for Carboxylation and Peroxidative Oxidation of Alkanes

2010-01Journal article Open access
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dc.contributor.authorSilva, Telma F. S.
dc.contributor.authorLuzyanin, Konstantin V.
dc.contributor.authorKirillova, Marina V.
dc.contributor.authorGuedes Da Silva, M. Fátima C.
dc.contributor.authorMartins, Luisa
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2012-03-13T19:19:14Z
dc.date.available2012-03-13T19:19:14Z
dc.date.issued2010-01
dc.description.abstractThe dioxovanadium(V) complexes [VO2(3,5-Me(2)Hpz)(3)][BF4] (1) (pz = pyrazolyl), [VO2{SO3C(pz)(3)}] (2), [VO2{HB(3,5-Me(2)pz)(3)}] (3) and [VO2{HC(pz)(3)}][BF4] (4), bearing pyrazole or scorpionate ligands, were obtained by reaction of triethyl vanadate [VO(OEt)(3)] with hydrotris(3,5-dimethyl-1-pyrazolyl)methane [HC(3,5-Me(2)pz)(3)] or 3,5-dimethylpyrazole (3,5-Me(2)Hpz; 1), lithium tris(1-pyrazolyl)methanesulfonate {Li[SO3C(pz)(3)], 2}, potassium hydrotris(3,5-dimethyl-1-pyrazolyl)borate {K[HB(3,5-Me(2)pz)(3)], 3} and hydrotris(1-pyrazolyl)methane [HC(pz)(3), 4], respectively. Treatment of [VO(OEt)(3)] with potassium hydrotris(1-pyrazolyl)borate {K[HB(pz)(3)]} led to the mixed eta(3)-tris(pyrazolyl)borate and eta(2)-bis(pyrazolyl)borate oxovanadium(IV) complex [VO{HB(pz)(3)}{H2B(pz)(2)}, 5]. The compounds were characterized by elemental analyses, IR, NMR and EPR spectroscopy, FAB and ESI mass spectrometry, cyclic voltammetry and, for 5, also by single crystal X-ray diffraction analysis. All complexes exhibit catalytic activity in the single-pot carboxylation [in trifluoroacetic acid/potassium peroxodisulfate (CF3COOH/K2S2O8)] of gaseous alkanes (methane and ethane) to carboxylic acids (yields up to 40%. TONs up to 157) and in the peroxidative oxidation [in water/acetonitrile (H2O/NCMe)] of liquid alkanes (cyclohexane and cyclopentane) to the corresponding alcohols and ketones (yields up to 24%, TONs up to 117), under mild conditions.por
dc.identifier.citationSilva T F S, Luzyanin K V, Kirilova M V, Silva M F G, Martins L M D R S, Pombeiro A J L. Novel Scorpionate and Pyrazole Dioxovanadium Complexes, Catalysts for Carboxylation and Peroxidative Oxidation of Alkanes.Advanced Synthesis & Catalysis. 2010; 352 (1): 171-187.por
dc.identifier.issn1615-4150
dc.identifier.urihttp://hdl.handle.net/10400.21/1294
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWiley-V C H Verlag GMBHpor
dc.relation.ispartofseries1;
dc.subjectAlkanespor
dc.subjectCarboxylationpor
dc.subjectC-H Bond Activationpor
dc.subjectOxovanadium Complexespor
dc.subjectPeroxidative Oxidationpor
dc.subjectScorpionate Ligandspor
dc.subjectVanade-Dependent Haloperoxidadespor
dc.subjectCopper Trethanolamine Complexespor
dc.subjectOno Donor Ligandspor
dc.subjectAcetic-Acidpor
dc.subjectCoordination Chemistrypor
dc.subjectVanadium Complexespor
dc.subjectVanadium Complexespor
dc.subjectHigly Efficientpor
dc.subjectSpectroscopic Characterizationpor
dc.subjectMild Conditionspor
dc.titleNovel Scorpionate and Pyrazole Dioxovanadium Complexes, Catalysts for Carboxylation and Peroxidative Oxidation of Alkanespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceWeinheimpor
oaire.citation.endPage187por
oaire.citation.issue352por
oaire.citation.startPage171por
oaire.citation.titleAdvanced Synthesis & Catalysispor
person.familyNameKirillova
person.familyNameGuedes da Silva
person.familyNameMartins
person.familyNamePombeiro
person.givenNameMarina V.
person.givenNameM. Fátima C.
person.givenNameLuisa
person.givenNameArmando
person.identifier789079
person.identifier637885
person.identifier.ciencia-id921F-C685-1674
person.identifier.ciencia-id7619-8E8E-979A
person.identifier.ciencia-idE218-E297-A4EA
person.identifier.ciencia-id8311-38FA-CEFB
person.identifier.orcid0000-0002-4375-828X
person.identifier.orcid0000-0003-4836-2409
person.identifier.orcid0000-0002-5403-9352
person.identifier.orcid0000-0001-8323-888X
person.identifier.ridH-8274-2012
person.identifier.ridG-6210-2011
person.identifier.ridI-5945-2012
person.identifier.scopus-author-id8526661400
person.identifier.scopus-author-id6701761571
person.identifier.scopus-author-id8650947800
person.identifier.scopus-author-id7006067269
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublication.latestForDiscovery8ed70b09-b4d3-4a5d-9f75-12b13a332204

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