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dc.contributor.authorConejero, Salvador-
dc.contributor.authorEsqueda Oliva, Ana Cristina-
dc.contributor.authorVillar Valpuesta, José E.-
dc.contributor.authorÁlvarez, Eleuterio-
dc.contributor.authorMaya, Celia-
dc.contributor.authorCarmona, Ernesto-
dc.date.accessioned2011-07-22T09:37:34Z-
dc.date.available2011-07-22T09:37:34Z-
dc.date.issued2010-12-21-
dc.identifier.citationInorganica Chimica Acta 369(1): 165-172 (2011)es_ES
dc.identifier.issn0020-1693-
dc.identifier.urihttp://hdl.handle.net/10261/37924-
dc.description23 páginas, 5 figuras, 6 esquemas.es_ES
dc.description.abstractComplexes TptolRh(C2H4)2 (1a) and TptolRh(CH2C(Me)C(Me)CH2) (1b) have been prepared by reaction of KTptol with the appropriate [RhCl(olefin)2]2 dimer (Tptol means hydrotris(3-p-tolylpyrazol-1-yl)borate). The two complexes show a dynamic behaviour that involves exchange between κ2 and κ3 coordination modes of the Tptol ligand. The iridium analogue, TptolIr(CH2C(Me)CHCH2) (2) has also been synthesized, and has been converted into the Ir(III) dinitrogen complex [(κ4-N,N’,N’’,C-Tptol)Ir(Ph)(N2) (3) by irradiation with UV light under a dinitrogen atmosphere. Compound 3 constitutes a rare example of Ir(III)–N2 complex structurally characterized by X-ray crystallography. Its N2 ligand can be easily substituted by acetonitrile or ethylene upon heating and denticity changes in the Tptol ligand, from κ4-N,N’,N’’,C (monometallated Tptol, from now on represented as Tptol′) to κ5-N,N′,N″,C,C″ (dimetallated Tptol ligand, represented as Tptol″) have been observed. When complex 3 is heated in the presence of acetylene, dimerization of the alkyne takes place to yield the enyne complex [(κ5-N,N′,N′′,C,C′-Tptol)Ir(CH2CHCCH), 7¸ in which the unsaturated organic moiety is bonded to iridium through the carbon–carbon double bond.es_ES
dc.description.sponsorshipFinancial support from the Spanish Ministerio de Educación y Ciencia (MEC) (Project No. CTQ2007-62814) and Consolider-Ingenio 2010 (No. CSD2007-00006) (FEDER support), the Junta de Andalucía (Project Nos. FQM-3151 and FQM-672) is gratefully acknowledge. A.C.E. and J.E.V.V. thanks the CONACYT (Ref. No. 229340) and the MEC (F.P.U) for research grants.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relation.isversionofPreprint-
dc.rightsopenAccesses_ES
dc.subjectRhodiumes_ES
dc.subjectIridiumes_ES
dc.subjectTris(pyrazoly)boratees_ES
dc.subjectC-H activationes_ES
dc.titleDifferent coordination modes of an aryl-substituted hydrotris(pyrazolyl)borate ligand in rhodium and iridium complexeses_ES
dc.typepreprintes_ES
dc.identifier.doi10.1016/j.ica.2010.12.031-
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.ica.2010.12.031es_ES
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