title: Bis(dipyridin-2-yl-amine-κ(2)N(2),N(2'))palladium(II) dinitrate.
abstract: The asymmetric unit of the title compound, [Pd(C(10)H(9)N(3))(2)](NO(3))(2), contains one half of a cationic Pd(II) complex and one NO(3) (-) anion. In the complex, the Pd(II) ion is four-coordinated by four pyridine N atoms derived from the two chelating dipyridin-2-yl-amine (dpa) ligands. The Pd(II) atom is located on an inversion centre, and thus the PdN(4) 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 inter-molecular N-H⋯O hydrogen bonds between the two O atoms of the anion and the N-H group of the cation. Weak inter-molecular C-H⋯O hydrogen bonds additionally link the constituents in the crystal structure. The NO(3) (-) anion was found to be disordered over two sites with a site-occupancy factor of 0.55 (10) for the major component.
authors.affiliation: School of Applied Chemical Engineering, The Research Institute of Catalysis, Chonnam National University, Gwangju 500-757,  Republic of Korea.
authors.forename: Kwang
authors.initials: K
authors.lastname: Ha