Barrier to recemization of the framework of a chiral polynuclear cation

Abstract
The framework of the chiral polynuclear cation [Rh{Fe(PAr2)(CO)2(η-C5H5)}2]+(2) racemizes with simultaneous bridge-terminal carbonyl exchange, ΔG being ca. 13 kcal mol–1 in CD2Cl2 for both processes.