Chemical Communications p. 2607 - 2608 (1996)
Update date:2022-08-03
Topics:
Peng, Wei-Jun
Train, Spencer G.
Howell, Donna K.
Fronczek, Frank R.
Stanley, George G.
The X-ray structure of an unsymmetrical tetraphosphine bridged zwitterionic Rh-IRhI dinuclear tetracarbonyl complex is reported along with the facile CO addition equilibrium to form an Rh0 tetraphosphine pentacarbonyl bimetallic species; both of these are poor hydroformylation catalysts due to the relatively high electron density on the rhodium centres, in marked contrast to a dicationic bimetallic RhII complex based on the same tetraphosphine ligand that is a highly active and regioselective hydroformylation catalyst.
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