Tetra-kis(4-cyano-pyridine)-palladium(II) bis-(trifluoro-methane-sulfonate)

Abstract

The title salt, [Pd(C(6)H(4)N(2))(4)](CF(3)SO(3))(2), comprises Pd(4-cyano-pyridine)(4) dications balanced by two trifluoro-methane-sulfonate anions. The Pd(II) atom lies in a square-planar geometry defined by four N atoms which form equivalent Pd-N inter-actions. The 4-cyano-pyridine ligands are twisted out of the N(4) plane, forming dihedral angles ranging from 66.5 (2) to 89.9 (2)°. In the crystal packing, columns of edge-to-edge dications define channels in which reside the anions. A range of C-H⋯N and C-H⋯O hydrogen-bonding interactions stabilizes the crystal packing.

Fig. 1.

Molecular structure of the cation in (I) showing atom-labelling scheme and displacement ellipsoids at the 50% probability level.

Fig. 2.

Supramolecular 2-D array (I) mediated by C–H···N and C–H···O contacts (blue and orange dashed lines, respectively). Colour code: Pd, orange; S, yellow; O, red; N, blue; C, grey; H, green.

Fig. 3.

Stacking of layers in (I), highlighting the formation of channels by the dications in which reside the anions. The C–H···N and C–H···O contacts are shown as blue and orange dashed lines, respectively. Colour code: Pd, orange; S, yellow; O, red; N, blue; C, grey; H, green.