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Host–guest properties of the trinuclear arene–ruthenium cluster cation [H<sub>3</sub>Ru<sub>3</sub>(C<sub>6</sub>H<sub>6</sub>)(C<sub>6</sub>Me<sub>6</sub>)<sub>2</sub>(O)]<sup>+</sup>
Auteur(s)
Date de parution
2004
In
Inorganica Chimica Acta, Elsevier, 2004/367/11/3289-3294
Résumé
The trinuclear arene–ruthenium cluster cation [H<sub>3</sub>Ru<sub>3</sub>(C<sub>6</sub>H<sub>6</sub>)(C<sub>6</sub>Me<sub>6</sub>)<sub>2</sub>(O)]<sup>+</sup>, containing a μ<sub>3</sub>-oxo cap and three arene ligands that span a hydrophobic pocket above the metal skeleton, has been crystallised as tetrafluoroborate salt in the presence of various guest molecules. The host–guest complexes have been characterised by single-crystal X-ray structure analysis. With chloroform as the guest molecule, a CHCl<sub>3</sub> molecule sits perfectly in the hydrophobic pocket, the hydrogen atom being encapsulated inside the cavity. When dioxane is added during the crystallisation process, the cluster forms infinite chains which are connected by a complex network of hydrogen bonds involving the μ3-oxo ligand, water and dioxane molecules. Interestingly, in the presence of phenol, a water molecule is hydrogen-bonded between the μ<sub>3</sub>-oxo ligand and the phenol molecule, forming a one-dimensional μ<sub>3</sub>-O … H<sub>2</sub>O … HO hydrogen-bonded chain. Finally, with benzoic acid, a head-to-tail host–guest chain is obtained, the phenyl ring being incorporated in the hydrophobic pocket, while the acid group is hydrogen-bonded to the μ3-oxo ligand.
Identifiants
Type de publication
journal article
