NMR spectra and crystal structure of a regioselective hydroformylation catalyst complex RhH(diphosphite)(CO)2

Article abstract of DOI:10.1016/0022-328X(95)05465-2

The crystal structure and characterization in solution are described for a very regioselective hydroformylation catalyst, RhH(CO)2(diphosphite) with <2(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diylphosphite),2'(bis(4-Cl-phenyl)phosphite)-3,3,5',5'-tetra-tert-butyl-1,1'-biphenyl> as the diphosphite.The complex is formed under CO-H2 pressure from Rh(CO)2Acac and has a distorted TBP geometry with both phosphorus atoms in equatorial positions.Keywords: Rhodium; Diphosphite; Hydroformylation; Catalysis; Crystal structure