Mechanistic theoretical insight of Ru(II) catalysts with a meridional-facial bpea fashion competition

Albert Poater, Joaquim Mola, Ana Gallegos Saliner, Isabel Romero, Montserrat Rodríguez, Antoni Llobet, Miquel Solà

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Resum

A novel mechanistic insight for the interconversion between two octahedral ruthenium isomers, trans-mer-[RuIICl2(bpea)(dmso)], 2a, and cis-fac-[RuIICl2(bpea)(dmso)], 2b, (bpea = N,N-bis(2-pyridylmethyl)ethylamine) is reported. The isomer 2a displaying the bpea ligand in a meridional fashion is kinetically favoured with respect to 2b, with the bpea ligand in a facial fashion, which is the thermodynamically favoured one. The dissociative mechanism with the cleavage of a chloro ligand as starting point becomes more feasible with respect to the intramolecular mechanism. However, DFT calculations make competitive the mechanism which dissociates first the dmso ligand. Thus, a further characterisation of all the reaction pathways for the interconversion 2a → 2b has been fulfilled. © 2008 Elsevier B.V. All rights reserved.
Idioma originalAnglès
Pàgines (de-a)200-204
RevistaChemical Physics Letters
Volum458
Número1-3
DOIs
Estat de la publicacióPublicada - 22 de maig 2008

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