Effects of Catalyst Site Accessibility on Catalysis by Rhodium(I) Complexes of Amphiphilic Ligands (1+) (n = 2,3,6,or 10) tethered to a Cation-exchange Resin

Article abstract of DOI:10.1039/DT9920002905

The effects of catalyst site accessibility on the activities of supported olefin hydrogenation catalysts have been assessed utilizing the complexes 3 4-norbornadiene; L = Ph2P(CH2)nPMe3(1+); n = 2, 3, 6 or 10> tethered to a cation-exchange resin via the tetraalkylphosphonium moieties of the co-ordinated ligands; the most active catalysts are those containing the longer-chain ligands, where the catalyst sites are farthest removed from steric hindrance by the resin surface.