(2,2′-Bipyridine-κ2 N,N′)(4,4′-dimethoxy-2,2′-bipyridine-κ2 N,N′)palladium(II) bis(trifluoromethanesulfonate)

In the cation of the title complex, the central palladium(II) atom is surrounded by two bidentate ligands, 2,2′-bipyridine and 4,4′-dimethoxy-2,2′-bipyridine, in a distorted square-planar environment.


Synthesis and crystallization
The title complex was prepared by adding Ag(CF 3 SO 3 ) (0.0771 g, 0.300 mmol) to an acetonitrile suspension (40 ml) of [Pd(2,2 0 -bipyridine)Cl 2 ] (0.100 g, 0.300 mmol).The mixture was heated, with stirring, at 333 K for 2 h and then filtered using a PTFE syringe filter to remove the precipitated AgCl.4,4 0 -Dimethoxy-2,2 0 -bipyridine (0.0649 g, 0.300 mmol) was added to the resulting solution and heated at 343 K to reduce the volume of the solution to 10 ml.X-ray diffraction quality crystals of the title complex were obtained by vapor diffusion of ether over the resulting concentrated acetonitrile solution.

Refinement
Crystal data, data collection and structure refinement details are summarized in Table 2.
Perspective view of the crystal packing of the title complex approximately along the b axis; H atoms are omitted for clarity.

Figure 3
Capped sticks representation of the complex cation showing �-� stacking interactions (red).H atoms and anions are omitted for clarity.

Special details
Geometry.All esds (except the esd in the dihedral angle between two l.s.planes) are estimated using the full covariance matrix.The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry.An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s.planes.

Table 2
Experimental details.