Repository logo
 
Publication

Dichlorodioxomolybdenum(VI) complexes bearing oxygen-donor ligands as olefin epoxidation catalysts

2015-08-21Journal article Open access
Simple item page
dc.contributor.authorOliveira, Tânia S. M.
dc.contributor.authorGomes, Ana C.
dc.contributor.authorLopes, Andre D.
dc.contributor.authorLourenço, J. P.
dc.contributor.authorAlmeida Paz, Filipe A.
dc.contributor.authorPillinger, Martyn
dc.contributor.authorGonçalves, Isabel S.
dc.date.accessioned2016-02-25T16:55:31Z
dc.date.available2016-02-25T16:55:31Z
dc.date.issued2015-08-21
dc.description.abstractTreatment of the solvent adduct [MoO2Cl2(THF)2] with either 2 equivalents of N,N-dimethylbenzamide (DMB) or 1 equivalent of N,N'-diethyloxamide (DEO) gave the dioxomolybdenum(vi) complexes [MoO2Cl2(DMB)2] () and [MoO2Cl2(DEO)] (). The molecular structures of and were determined by single-crystal X-ray diffraction. Both complexes present a distorted octahedral geometry and adopt the cis-oxo, trans-Cl, cis-L configuration typical of complexes of the type [MoO2X2(L)n], with either the monodentate DMB or bidentate DEO oxygen-donor ligands occupying the equatorial positions trans to the oxo groups. The complexes were applied as homogeneous catalysts for the epoxidation of olefins, namely cis-cyclooctene (Cy), 1-octene, trans-2-octene, α-pinene and (R)-(+)-limonene, using tert-butylhydroperoxide (TBHP) as oxidant. In the epoxidation of Cy at 55 °C, the desired epoxide was the only product and turnover frequencies in the range of ca. 3150-3200 mol molMo(-1) h(-1) could be reached. The catalytic production of cyclooctene oxide was investigated in detail, varying either the reaction temperature or the cosolvent. Complexes and were also applied in liquid-liquid biphasic catalytic epoxidation reactions by using an ionic liquid of the type [C4mim][X] (C4mim = 1-n-butyl-3-methylimidazolium; X = NTf2, BF4 or PF6] as a solvent to immobilise the metal catalysts. Recycling for multiple catalytic runs was achieved without loss of activity.pt_PT
dc.identifier.citationDalton Trans., 2015, 44, 14139pt_PT
dc.identifier.doihttps://dx.doi.org/10.1039/c5dt02165kpt_PT
dc.identifier.issn1477-9226
dc.identifier.otherAUT: ADL01681; JLO01215;
dc.identifier.urihttp://hdl.handle.net/10400.1/7749
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoyal Society of Chemistrypt_PT
dc.subjectMolybdenum complexespt_PT
dc.subjectEpoxidationpt_PT
dc.subjectIonic liquidspt_PT
dc.titleDichlorodioxomolybdenum(VI) complexes bearing oxygen-donor ligands as olefin epoxidation catalystspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PTDC%2FEQU-EQU%2F121677%2F2010/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PTDC%2FQEQ-SUP%2F1906%2F2012/PT
oaire.citation.endPage14148pt_PT
oaire.citation.issue31
oaire.citation.startPage14139pt_PT
oaire.citation.titleDalton Transactionspt_PT
oaire.citation.volume44pt_PT
oaire.fundingStreamCOMPETE
oaire.fundingStreamCOMPETE
person.familyNameD. Lopes
person.familyNameLourenço
person.givenNameAndré
person.givenNameJoão P.
person.identifier2824636
person.identifier634248
person.identifier.ciencia-id351E-856A-0300
person.identifier.ciencia-idF81F-A1F0-2A7C
person.identifier.orcid0000-0002-9702-1216
person.identifier.orcid0000-0002-0501-6672
person.identifier.ridE-2136-2012
person.identifier.ridA-7758-2008
person.identifier.scopus-author-id7201958625
person.identifier.scopus-author-id57195730600
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.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf2f0fe56-e04d-4229-b37b-2b9f1789fe2d
relation.isAuthorOfPublicationf66ab886-d989-4c1d-9550-527507723c26
relation.isAuthorOfPublication.latestForDiscoveryf66ab886-d989-4c1d-9550-527507723c26
relation.isProjectOfPublication9e75a0b6-9949-40af-856b-1279d909676c
relation.isProjectOfPublication55faf00f-0259-4bf7-9208-2f7e03b0e5d7
relation.isProjectOfPublication.latestForDiscovery9e75a0b6-9949-40af-856b-1279d909676c

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Dalton, 2015.pdf
Size:
744.04 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
3.46 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

FCT2-Artigos (em revistas ou actas indexadas)