(2,3-Di-2-pyridylpyrazine-kappa N-2(2),N-3)-diiodidoplatinum(II)

The Pt-II ion in the title complex, [PtI2(C14H10N4)], exists in a distorted square-planar environment defined by the two pyridine N atoms of the chelating 2,3-di-2-pyridylpyrazine ligand and two iodide anions. The pyridine rings are inclined to the least-squares plane of the PtI2N2 unit [maximum deviation = 0.070 (3) angstrom] at 66.1 (2) and 65.9 (2)degrees; the pyrazine ring is perpendicular to this plane [dihedral angle = 89.7 (2)degrees]. Two intermolecular C-H center dot center dot center dot I hydrogen bonds, both involving the same I atom as hydrogen-bond acceptor, generate a layer structure extending parallel to (001). Molecules are stacked in columns along the a axis. Along the b axis, successive molecules stack in opposite directions.