Palladium hydroxide dimers were prepared by reactions of CsOH with monomeric [Pd(NHC)(eta(3)-allyl)Cl] starting materials. The dimers represent species proposed as intermediates in important cross-coupling reactions. These complexes were tested for their catalytic activity in Suzuki-Miyaura coupling and Buchwald-Hartwig aryl amination. The hydroxide complexes were susceptible to hydrogenolysis on exposure to H-2 gas. Following H2O elimination and beta-hydride elimination of an additional cinnamyl ligand, a Pd(0) species is formed which can react with other available ligands.</p
