Research Article: Bis(dipyridin-2-yl­amine-κ2N2,N2′)palladium(II) dinitrate

Date Published: April 01, 2012

Publisher: International Union of Crystallography

Author(s): Kwang Ha.


The asymmetric unit of the title compound, [Pd(C10H9N3)2](NO3)2, contains one half of a cationic PdII complex and one NO3− anion. In the complex, the PdII ion is four-coordinated by four pyridine N atoms derived from the two chelating dipyridin-2-yl­amine (dpa) ligands. The PdII atom is located on an inversion centre, and thus the PdN4 unit is exactly planar. The dpa ligand itself is not planar, showing a dihedral angle between the pyridine rings of 39.9 (1)°. The anions are connected to the complex by inter­molecular N—H⋯O hydrogen bonds between the two O atoms of the anion and the N—H group of the cation. Weak inter­molecular C—H⋯O hydrogen bonds additionally link the constituents in the crystal structure. The NO3− anion was found to be disordered over two sites with a site-occupancy factor of 0.55 (10) for the major component.

Partial Text

For the crystal structures of the related cationic PdII complexes [Pd(dpa)2](X)2 (X = Cl or PF6), see: Živković et al. (2007 ▶); Antonioli et al. (2008 ▶).