Bis(acetato-O)bis(pyridine-N)palladium(II) Monohydrate and Bis(acetato-O)bis(diethylamine-N)palladium(II)

The title complexes, [Pd(C 2 H 3 O 2 ) 2 (C 5 H 5 N) 2 ].H 2 O, (I), and [Pd(C 2 H 3 O 2 ) 2 (C 4 H 11 N) 2 ], (II), are typical of metal acetates with additional N-donor coordination. In both structures, the central Pd atom has a centrosymmetric square-planar environment. In the pyridine complex (I), carbonyl O atoms are involved in intermolecular O-H...O hydrogen bonds with water molecules and in the amine complex (II), they participate in intramolecular N-H...O hydrogen bonds. Owing to the latter, the Pd-N bond lengths are different with values of 2.010 (4) for complex (I) and 2.066 (2) A for complex (II).