Issue 16, 2004

Single and double metallic layer-containing ruthenium dendrimers. Synthesis and catalytic properties

Abstract

The reaction of a series of phosphanyl-terminated carbosilane dendrimers displaying only one phosphorus ligand per arm with [RuCl2(p-cymene)]2 resulted in the grafting of RuCl(p-cymene) moieties on the periphery of the dendrimer. In these species, the chloride ligand is easily displaced by the organic bases pyridine, 4-cyanopyridine and 4,4′-bipyridine to afford new cationic metallodendrimers. NMR studies have confirmed the chirality of the ruthenium centre. The species containing 4,4′-bipyridine reacts through the uncoordinated pyridyl nitrogen with a new equivalent of [RuCl2(p-cymene)]2 or [RhCl(CO)2]2 to lead to homo- or hetero-bimetallic layer-containing dendrimeric systems. The ruthenodendrimers were tested as catalysts in the transfer hydrogenation of cyclohexanone by propan-2-ol and their activity compared with that of some analogous mononuclear ruthenium(II) complexes.

Graphical abstract: Single and double metallic layer-containing ruthenium dendrimers. Synthesis and catalytic properties

Article information

Article type
Paper
Submitted
26 Apr 2004
Accepted
04 Jun 2004
First published
08 Jul 2004

Dalton Trans., 2004, 2450-2457

Single and double metallic layer-containing ruthenium dendrimers. Synthesis and catalytic properties

I. Angurell, G. Muller, M. Rocamora, O. Rossell and M. Seco, Dalton Trans., 2004, 2450 DOI: 10.1039/B406272H

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