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V(IV), Fe(II), Ni(II) and Cu(II) complexes bearing 2,2,2-tris(pyrazol-1-yl)ethyl methanesulfonate: application as catalysts for the cyclooctane oxidation

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dc.contributor.authorSilva, Telma F. S.
dc.contributor.authorRocha, Bruno G. M.
dc.contributor.authorGuedes Da Silva, M. Fátima C.
dc.contributor.authorMartins, Luisa
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2019-03-18T09:27:20Z
dc.date.available2019-03-18T09:27:20Z
dc.date.issued2016
dc.description.abstractWater-soluble compounds [VOCl2{CH3SO2OCH2C(pz)(3)}] (pz = pyrazol-1-yl) 1, [FeO2{CH3SO2OCH2C(pz)(3)}] 2, [NiO2{CH3SO2OCH2C(pz)(3)}] 3 and [Cu{CH3SO2OCH2C(pz)(3)}(2)](OTf)(2) 4 were obtained by reactions between the corresponding metal salts and 2,2,2-tris(pyrazol-1-yl)ethyl methanesulfonate, CH3SO2OCH2C(pz)(3). They were isolated as air-stable solids and fully characterized by IR, FTIR, NMR (for 2), EPR (for 1), ESI-MS(+/-), elemental analysis and (for 4) single-crystal X-ray diffraction. In all, half- (1-3) or full-sandwich (4), compounds the C-scorpionate ligand shows the N,N,N-coordination mode. 3 and 4 appear to provide the first examples of a Ni(II) and a full-sandwich Cu(II) compound respectively, bearing that scorpionate ligand. Compound 3 is the first Ni(II) tris(pyrazol-1-yl)methane type complex to be applied as catalyst for the oxidation of alkanes. Compounds 1-4 exhibit catalytic activity for the peroxidative (with aq. H2O2) oxidation, in water/acetonitrile medium and under mild homogeneous conditions, of cyclooctane to the corresponding alcohol and ketone (yields up to ca. 27%). The effect of the presence of additives, such as nitric acid or pyridine, was studied.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSILVA, Telma F. S.; [et al] – V(IV), Fe(II), Ni(II) and Cu(II) complexes bearing 2,2,2-tris(pyrazol-1-yl)ethyl methanesulfonate: application as catalysts for the cyclooctane oxidation. New Journal of Chemistry. ISSN 1144-0546. Vol. 40, N.º 1 (2016), pp. 528-537pt_PT
dc.identifier.doi10.1039/c5nj01865jpt_PT
dc.identifier.issn1144-0546
dc.identifier.issn1369-9261
dc.identifier.urihttp://hdl.handle.net/10400.21/9725
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoyal Society of Chemistrypt_PT
dc.relationBL/CQE-2012-026pt_PT
dc.relationBL/CQE-2013-010pt_PT
dc.relationSFRH/BD/52370/2013pt_PT
dc.relation.publisherversionhttps://pubs.rsc.org/en/content/articlepdf/2016/nj/c5nj01865jpt_PT
dc.subjectComplexes bearingpt_PT
dc.subjectCatalystspt_PT
dc.subjectCyclooctanept_PT
dc.subjectOxidationpt_PT
dc.titleV(IV), Fe(II), Ni(II) and Cu(II) complexes bearing 2,2,2-tris(pyrazol-1-yl)ethyl methanesulfonate: application as catalysts for the cyclooctane oxidationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00100%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FQUI-QUI%2F119561%2F2010/PT
oaire.citation.endPage537pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage528pt_PT
oaire.citation.titleNew Journal of Chemistrypt_PT
oaire.citation.volume40pt_PT
oaire.fundingStream5876
oaire.fundingStream3599-PPCDT
person.familyNameRocha
person.familyNameGuedes da Silva
person.familyNameMartins
person.familyNamePombeiro
person.givenNameBruno G. M.
person.givenNameM. Fátima C.
person.givenNameLuisa
person.givenNameArmando
person.identifier789079
person.identifier637885
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person.identifier.orcid0000-0003-0357-0677
person.identifier.orcid0000-0003-4836-2409
person.identifier.orcid0000-0002-5403-9352
person.identifier.orcid0000-0001-8323-888X
person.identifier.ridG-3614-2017
person.identifier.ridH-8274-2012
person.identifier.ridG-6210-2011
person.identifier.ridI-5945-2012
person.identifier.scopus-author-id55179069100
person.identifier.scopus-author-id6701761571
person.identifier.scopus-author-id8650947800
person.identifier.scopus-author-id7006067269
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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