Ruthenium complexes with chiral bis-pinene ligands: An array of subtle structural diversity

Lydia Vaquer, Albert Poater, Jonathan De Tovar, Jordi García-Antón, Miquel Solà, Antoni Llobet, Xavier Sala

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Resum

A new chiral derivative of the N,N-bis(2-pyridylmethyl)ethylamine (bpea) ligand, Me-pinene[5,6]bpea [(-)-L1], has been prepared from a new aldehyde building block [Me-pinene-aldehyde, (-)-4] arising from the monoterpene chiral pool. The tridentate (-)-L1 ligand has been employed to prepare a new set of Ru-Cl complexes in combination with didentate 2,2′-bipyridine (bpy) with the general formula [RuCl((-)-L1)(bpy)]+. These complexes have been characterized in solution by cyclic voltammetry, UV-vis, and 1D and 2D NMR spectroscopy. Isomeric mixtures of trans,fac-C1a and anti,mer-C1c compounds are formed when (-)-L1 is reacted with a [Ru(bpy)(MeOH)Cl3] precursor. Density functional theory calculations of all of the potential isomers of this reaction have been performed in order to interpret the experimental results in terms of electronic and steric effects and also to unravel the observed isomerization pathway between anti,mer-C1c and trans,fac-C1a. © 2013 American Chemical Society.
Idioma originalAnglès
Pàgines (de-a)4985-4992
RevistaInorganic Chemistry
Volum52
Número9
DOIs
Estat de la publicacióPublicada - 6 de maig 2013

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