906483-63-4Relevant academic research and scientific papers
Bimetallic complexes with ruthenium and tantalocene moieties: Synthesis and use in a catalytic cyclopropanation reaction
Goux, Jér?me,Gendre, Pierre Le,Richard, Philippe,Mo?se, Claude
, p. 3239 - 3244 (2006)
The reaction of the tantalocene dichloride monophosphines (1-2) with the binuclear complex [(p-cymene)RuCl2]2 gives the heterobimetallic compounds (p-cymene)[(η5-C5H5)(μ-η5:η1-C5H4(CH2)2PR2)TaCl2]RuCl2 (3-4). The air oxidation of these bimetallic species 3-4, leads to the cationic hydroxo tantalum ruthenium derivatives 5-6. The last ones are easily deprotonated by a base to afford the oxo analogues 7-8. A preliminary assessment in catalytic cyclopropanation of styrene with tantalum ruthenium bimetallic complexes 3-8 as precatalysts revealed a cooperative effect with a subtle role of the early metal fragment.
