π–π Dimerization of a mono(pyrid­yl–imine) platinum(II) chelate

The cation of the title complex salt, chlorido{2,2-dimethyl-N-[(E)-1-(pyridin-2-yl)ethyl­idene]propane-1,3-diamine}­pla­ti­n­um(II) tetra­fluoridoborate, [PtCl(C₁₂H₁₉N₃)]BF₄, exhibits a nominally square-planar Pt^II ion coordinated to a chloride ion [Pt—Cl = 2.3046 (9) Å] and three unique N-atom types, viz. pyridine, imine and amine, of the tridentate Schiff base ligand formed by the 1:1 condensation of 1-(pyridin-2-yl)ethanone and 2,2-dimethyl­propane-1,3-diamine. The cations are π-stacked in inversion-related pairs (dimers), with a mean plane separation of 3.426 Å, an intra­dimer Pt...Pt separation of 5.0785 (6) Å and a lateral shift of 3.676 Å. The centroid (Cg) of the pyridine ring is positioned approximately over the Pt^II ion of the neighbouring cation (Pt...Cg = 3.503 Å).