[4′-(2-Pyridyl)-2,2′:6′,2′′-ter­pyridine-κ³N,N′,N′′]isothio­cyanato­copper(II) thio­cyanate

In the title compound, [Cu(NCS)(C₂₀H₁₄N₄)]SCN, the Cu atom is four-coordinated by a tridentate chelating 4′-(2-pyridyl)-2,2′:6′,2′′-ter­pyridine ligand and one isothio­cyanate group in a square-planar coordination geometry. The sum of angles around the Cu^II center is 359.1°.

Bis­[μ-4′-(2-pyridyl)-2,2′:6′,2′′-ter­pyridine]­disilver(I) bis­(hexa­fluoro­phosphate)

The Ag atoms and the ligands of the dication in the title compound, [Ag₂(C₂₀H₁₄N₄)₂](PF₆)₂, are disordered; the dication lies on a center of symmetry. The major component is chelated by two N atoms of the heterocycle and is coordinated by the N atom of the pyridyl substituent of the other heterocycle; the geometry is trigonal planar distorted towards tetrahedral owing to a weak Ag...F interaction. The minor component is chelated by three N atoms and is also coordinated by the N atom of the pyridyl substituent of the inversion-related heterocycle; its geometry is octahedral owing to two Ag...F interactions. One anion lies on a special position of site symmetry 2 and the other on a special position of site symmetry . The disorder in the centrosymmetric dication is best described in terms of the Ag atom being disordered over two sites and the C₅H₂N ring of the heterocycle being rotated by about 180°; the two dications are superimposed in the crystal structure.