Energy dispersive EXAFS performance studies on triphodalphosphine rhodium biphasic catalyst for hydrogenation and hydroformylation of olefins

Energy dispersive EXAFS (EDE) data have been analyzed for the hydrogenation of styrene by the rhodium zwitterionic Rh(l) complexes, Rh(sulphos)(cod) and hydroformylation of I-hexene by the Rh(sulphos)(CO)(2) using curved wave theory with ab initio phase-shifts. The derived parameters for metal compounds were in good agreement within experimental error of 0.02-0.05 Angstrom for the bond distances. The bond lengths in the rhodium complexes were refined at average distances of Rh-C 1.90 Angstrom, Rh-P 2.31 Angstrom and Rh-O 2.90 Angstrom consistently. This is a good start for the quantitative analysis of the dispersive EXAFS techniques at variable temperatures and high pressures.