Energy Dispersive EXAFS Performance Studies on Triphodalphosphine Rhodium Biphasic Catalyst for Hydrogenation and Hydroformylation of Olefins

Abstract

Energy dispersive EXAFS (EDE) data have been analyzed for
the hydrogenation of styrene by the rhodium zwitterionic Rh(I)
complexes. Rh(sulphos)(cod) and hydroformylation of 1-hexene by
the Rh(sulphos)(COh 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 Å for the
bond distances. The bond lengths in the rhodium complexes were
refined at average distances of Rh-C 1.90 Å. Rh-P 2.31 Å and Rb-O
2.90 Å consistently. This is a good start for the quantitative analysis
of the dispersive EXAFS techniques at variable temperatures and
high pressures.