157044-30-9Relevant academic research and scientific papers
Effects of changes in the ligands on the skeleton and the catalytic activity of some new rhodium complexes with pyrazolato moieties
Schumann, Herbert,Hemling, Holger,Ravindar, Vadde,Badrieh, Yacoub,Blum, Jochanan
, p. 213 - 220 (2007/10/02)
Whereas the reaction of 2 (where pz is either a pyrazolato or 3,5-dimethylpyrazolato group) with 3-(diphenylphosphino)benzoic acid and (2-formylphenyl)diphenylphosphine gives the dinuclearic complexes 2 (1 and 2) and 2 (5 and 6) respectively, 2-(diphenylphosphino)benzoic acid gives the monorhodium compounds (3 and 4).The structures of (6) have been determined by X-ray diffraction analyses.Both, the monorhodium and the dirhodium complexes catalyse the hydroformylation of acyclic and cyclic olefins at 120 deg C and at CO and H2 pressures of 28 atm.At 70-90 deg C the dinuclear complexes with 3-(diphenylphosphino)benzoic acid moieties are substantially more active than the monorhodium compounds.Key words: Rhodium; Phosphine; Hydroformylation; X-ray diffraction
