High-pressure NMR study of the dynamical solvent effects on the rotation of coordinated ethylene in (π-C5H5)Rh(C2H4)2

Abstract

Preliminary results of the high-pressure NMR study show that the rate of rotation of coordinated ethylene groups in (π-C5H5)Rh(C2H4)2 dissolved in benzene and chloroform solvents increases with increasing pressure. The rate constants obtained in different solutions correlate with the solvent shear viscosity, and the viscosity dependence of the rate constant indicates inertial behavior in agreement with the prediction of the Skinner and Wolynes model.