π-Allylic palladium schiff base complexes

Abstract

π-Allylic palladium(II) complexes with bidentate N-organosalicylaldimines, (All)PdSalNR, and also some binuclear complexes in which a tetradentate Schiff-base forms a bridge between two allylpalladium units have been synthesized. The 1H NMR spectra of these complexes have enabled isomeric forms of several of the compounds to be detected as well as providing information about their dynamic stereochemistry. On the basis of these latter studies competing monomolecular and bimolecular mechanisms for end-to-end exchange of the π-allyl group are proposed, which may change in relative importance with temperature. Insertion reactions of 1,3-dienes have also been studied. © 1974.