Two palladium(II) complexes, [Pd(phen) , in acetonitrile and water, respectively. The structures of both complexes are based on a Pd(phen) 2+ metal core, with two acetonitrile molecules binding in a monodentate fashion in complex 1 and two hydroxo bridges holding together two cores to form a dimer in complex 2. Additionally, both complexes present a hydrogen bonded 3-D network involving the triflate anions in 1, and water and triflate anions in 2. Both complexes have been characterized by infrared and 1 H NMR spectroscopy and their crystal structures determined by Xray crystallography.