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Arene ruthenium bis-saccharinato complexes: Synthesis, molecular structure and catalytic oxidation properties in aqueous solution
Auteur(s)
Maison d'édition
Elsevier
Date de parution
2011
In
Journal of Organometallic Chemistry
Vol.
696
No
21
De la page
3285
A la page
3291
Résumé
Arene ruthenium complexes [(η<sup>6</sup>-arene)Ru(sacc)<sub>2</sub>(OH<sub>2</sub>)] (arene = <i>para</i>-cymeme, benzene) containing an aqua and two saccharinato ligands have been synthesized from [(η<sup>6</sup>-arene)RuCl<sub>2</sub>]<sub>2</sub> and sodium saccharinate in a water-ethanol mixture (1:1). The aqua complex [(η<sup>6</sup>-MeC<sub>6</sub>H<sub>4</sub>Pr<sup><i>i</i></sup>)Ru(sacc)<sub>2</sub>(OH<sub>2</sub>)] reacts with acetonitrile to give the acetonitrile complex [(η<sup>6</sup>-MeC<sub>6</sub>H<sub>4</sub>Pr<sup><i>i</i></sup>)Ru(sacc)<sub>2</sub>(NCMe)]. The corresponding benzene derivative [(η<sup>6</sup>-C<sub>6</sub>H<sub>6</sub>)Ru(sacc)<sub>2</sub>(NCMe)] was obtained from [(η<sup>6</sup>-C<sub>6</sub>H<sub>6</sub>)RuCl<sub>2</sub>]<sub>2</sub> and saccNa in an acetonitrile-methanol mixture (1:1). All new complexes show a piano-stool geometry with two mono-hapto nitrogen-bonded saccharinato ligands in addition to a H<sub>2</sub>O or MeCN ligand. All complexes of the type [(η<sup>6</sup>-arene)Ru(sacc)<sub>2</sub>(OH<sub>2</sub>)] and [(η<sup>6</sup>-arene)Ru(sacc)<sub>2</sub>(NCMe)] were found to catalyze the oxidation of secondary alcohols with <i>tert</i>-butyl hydroperoxide (Bu<sup><i>t</i></sup>OOH) to give the corresponding ketones in aqueous solution.
Identifiants
Type de publication
journal article
