[4′-(4-Aminophenyl)-2,2′:6′,2"-terpyridine]chloridopalladium(II) chloride

The PdII atom in the complex cation of the title compound, [PdCl(C21H16N4)]Cl, is coordinated by three N atoms derived from the terpyridine ligand and a chloride ion, which define a distorted PdClN3 square-planar coordination geometry. In the crystal, the presence of N-H...Cl hydrogen bonds involving the amino H atom and chloride anions link two cations and two anions into a four-ion aggregate via centrosymmetric eight-membered [...H-N-H...Cl](2) synthons. Layers of cations are interspersed with the chloride anions with stabilization provided by C-H...Cl interactions involving both Cl atoms, as well as pi-pi interactions [the closest interaction of 3.489 (6) A occurs between a chelate ring and a pyridyl residue].