Date Published: February 01, 2012
Publisher: International Union of Crystallography
Author(s): Kwang Ha.
The PdII ion in the title complex, [Pd(NCS)2(C14H10N4)], is four-coordinated in a distorted square-planar environment by the two pyridine N atoms of the chelating 2,3-di-2-pyridylpyrazine (dpp) ligand and two S atoms from two thiocyanate anions. The pyridine rings are considerably inclined to the least-squares plane of the PdS2N2 unit [maximum deviation = 0.027 (1) Å], making dihedral angles of 70.3 (2) and 69.2 (1)°. The pyrazine ring is almost perpendicular to the PdS2N2 plane, with a dihedral angle of 86.3 (1)°. The thiocyanate ligands are located on opposite sides of the PdS2N2 unit plane and are almost linear [N—C—S angles = 177.8 (6) and 178.9 (6)°]. The complex molecules are stacked in columns along the b axis and are connected by intermolecular C—H⋯N hydrogen bonds, forming chains along the a axis.
For related crystal structures of [PdX2(dpp)] (X = Cl, Br or I), see: Ha (2011a ▶,b ▶,c ▶). For related Pt and Pd complexes, see: Granifo et al. (2000 ▶); Cai et al. (2009 ▶).