MECHANISTIC STUDY OF A RUTHENIUM HYDRIDE COMPLEX OF TYPE [RuH(CO)(N-N)(PR3)2]+ AS CATALYST PRECURSOR FOR THE HYDROFORMYLATION REACTION OF 1-HEXENE

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dc.contributor.authorMoya, SA
dc.contributor.authorYanez, M
dc.contributor.authorPerez, C
dc.contributor.authorLopez, R
dc.contributor.authorZuniga, C
dc.contributor.authorCardenas-Jiron, G
dc.date.accessioned2017-05-24T16:16:14Z
dc.date.available2017-05-24T16:16:14Z
dc.date.issued2016-12
dc.descriptionIndexación: Web of Science; Scopus; Scielo.es_CL
dc.description.abstractThe catalytic activity of systems of type [RuH(CO)(N-N)(PR3)(2)](+) was evaluated in the hydroformylation reaction of 1-hexene. The observed activity is explained through a reaction mechanism on the basis of the quantum theory. The mechanism included total energy calculations for each of the intermediaries of the elemental steps considered in the catalytic cycle. The deactivation of the catalyst precursors takes place via dissociation of the polypyridine ligand and the subsequent formation of thermodynamically stable species, such as RuH(CO)(3)(PPh3)(2) and RuH3(CO)(PPh3)(2), which interrupt the catalytic cycle. In addition, the theoretical study allows to explain the observed regioselectivity which is defined in two steps: (a) the hydride migration reaction with an anti-Markovnikov orientation to produce the alkyl-linear-complex (3.1a), which is more stable by 19.4 kJ/mol than the Markovnikov orientation (alkyl-branched-complex) (3.1b); (b) the carbon monoxide insertion step generates the carbonyl alkyl-linear specie (4.1a) which is more stable by 9.5 kJ/mol than the alternative species (4.1b), determining the preferred formation of heptanal in the hydroformylation of 1-hexene. Palabras clavees_CL
dc.description.urihttp://ref.scielo.org/db4yc5
dc.identifier.citationJournal of the Chilean Chemical Society 61(4), pp. 3281-3286es_CL
dc.identifier.issn0717-9707
dc.identifier.otherhttp://dx.doi.org/10.4067/S0717-97072016000400026
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/3409
dc.language.isoenes_CL
dc.publisherSociedad Chilena de Químicaes_CL
dc.subjectDFTes_CL
dc.subjectHydroformylationes_CL
dc.subjectRutheniumes_CL
dc.subjectHomogeneous catalysises_CL
dc.titleMECHANISTIC STUDY OF A RUTHENIUM HYDRIDE COMPLEX OF TYPE [RuH(CO)(N-N)(PR3)2]+ AS CATALYST PRECURSOR FOR THE HYDROFORMYLATION REACTION OF 1-HEXENEes_CL
dc.typeArtículoes_CL
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