Catalytic activity and visible spectroscopy of [Rh(norbornadiene)Cl]2/p-RC6H4)3P system in methanol

Abstract
The catalytic hydrogenation of hex-1-ene in methanolic solution with [Rh(norbornadiene)Cl]2/(p-RC6H4)3 P (R=H, Me or OMe) systems preparedin situ has been measured. The catalytic activity shows a dependence on the ageing of the catalyst precursor solution in the presence of air. A spectroscopic study (visible region) has been carried out for the system with triphenyl phosphine and shows degradation with the formation of [Rh(norbornadiene)PPh3Cl] as an intermediate. It was demonstrated that the spectral changes and the consequent catalytic activity are due to PPh3 loss because of the oxygen dissolved in the media.
Description
Keywords
Oxygen, Hydrogenation, Spectroscopy, Methanol, Catalysis
Citation