EFFECTS OF PHENANTHROLINE TYPE LIGANDS ON THE DYNAMIC PROCESSES OF (ETA(3)-ALLYL)PALLADIUM COMPLEXES - MOLECULAR-STRUCTURE OF (2,9-DIMETHYL-1,10-PHENANTHROLINE)[(1,2,3-ETA)-3-METHYL-2-BUTENYL]-CHLOROPALLADIUM

Using saturation-transfer experiments and measurements of coalescence temperatures, the effects of phenanthroline ligands on the activation parameters for syn-anti isomerization, syn-anti proton exchange, and apparent rotation in six (eta3-allyl)palladium complexes have been studied. The rates of the processes are increased by the addition of ionic, coordinating ligands such as chloride indicating a pentacoordinated intermediate. By X-ray crystallography the structure of a potential intermediate of this type has been determined. Finally, using 2-(8-methoxy-1-naphthyl)-1,10-phenanthroline, it has been possible both to observe chiral induction on a deuterium-substituted eta3-allyl group and to find additional information on the mechanism of apparent rotation.