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Syntheses and properties of hydride–cyanamide and derived hydrogen-cyanamide complexes of molybdenum(IV). Crystal structure of [MoH2(NCNH2)2(Ph2PCH2CH2PPh2)2][BF4]2

2003-08-26Journal article Restricted access
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dc.contributor.authorMartins, Luisa
dc.contributor.authorAlegria, Elisabete
dc.contributor.authorHughes, David L.
dc.contributor.authorFraústo Da Silva, João
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2020-07-22T18:28:15Z
dc.date.available2020-07-22T18:28:15Z
dc.date.issued2003-08-26
dc.description.abstractThe first hydride–cyanamide (or –cyanoguanidine) complexes of molybdenum, [MoH2(NCR)2(dppe)2][BF4]2 (R = NH2 1a, NMe2 1b, NEt2 1c or NC(NH2)2 1d; dppe = Ph2PCH2CH2PPh2), have been prepared by treatment of [MoH4(dppe)2] in THF with the appropriate cyanamide (or cyanoguanidine) in the presence of HBF4. Reaction of 1a with a base leads to the bis(hydrogen-cyanamide) [or bis(hydrogen-cyananoimide)] complex trans-[Mo(NCNH)2(dppe)2][BF4]2 2 or to the bis(cyanoimide) complex trans-[Mo(NCN)2(dppe)2] 3, via basecatalysed or base-promoted dehydrogenation, whereas cathodically-induced dehydrogenation appears to form [MoH2(NCNH)(NCNH2)(dppe)2] 4. The spectroscopic properties of the complexes are also reported along with their electrochemical behaviours and the molecular structure of 1a as established by X-ray crystallography which indicates the presence of the NCNH2 ligands involved in two hydrogen bonds connecting the ions in dimeric units.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMARTINS, Luísa M. D. R. S.; [et al] – Syntheses and properties of hydride–cyanamide and derived hydrogen-cyanamide complexes of molybdenum(IV). Crystal structure of [MoH2(NCNH2)2(Ph2PCH2CH2PPh2)2][BF4]2. Journal of the Chemical Society, Dalton Transactions. 2003, N.º 19 (2003), pp. 3743-3750pt_PT
dc.identifier.doi10.1039/ b306368bpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.21/12080
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoyal Society of Chemistrypt_PT
dc.relation.publisherversionhttps://pubs.rsc.org/en/content/articlepdf/2003/dt/b306368bpt_PT
dc.subjectHydride–cyanamidept_PT
dc.subjectHydrogen-cyanamidept_PT
dc.subjectMolybdenum(IV)pt_PT
dc.titleSyntheses and properties of hydride–cyanamide and derived hydrogen-cyanamide complexes of molybdenum(IV). Crystal structure of [MoH2(NCNH2)2(Ph2PCH2CH2PPh2)2][BF4]2pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage3750pt_PT
oaire.citation.issue19pt_PT
oaire.citation.startPage3743pt_PT
oaire.citation.titleJournal of the Chemical Society, Dalton Transactionspt_PT
person.familyNameMartins
person.familyNameAlegria
person.familyNameFraústo da Silva
person.familyNamePombeiro
person.givenNameLuisa
person.givenNameElisabete
person.givenNameJoão
person.givenNameArmando
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person.identifier.scopus-author-id8650947800
person.identifier.scopus-author-id8315848300
person.identifier.scopus-author-id6701716473
person.identifier.scopus-author-id7006067269
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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