769971-59-7Relevant academic research and scientific papers
Single and double metallic layer-containing ruthenium dendrimers. Synthesis and catalytic properties
Angurell, Inma,Muller, Guillermo,Rocamora, Merce,Rossell, Oriol,Seco, Miquel
, p. 2450 - 2457 (2007/10/03)
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 [RuCl 2(p-cymene)]2 or [RhCl(CO)2]32 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.
