Structure and Properties of Self-Assembled Ternary Adducts K3[Cu(CN)4], Trimethyl Tin Chloride and 4-Methylpyrimidine

The reaction of K₃Cu(CN)₄], Me₃SnCl and 4-methylpyrimidine (mpym) at room temperature affords the 3D-octameric _∞ ³ Cu₈(CN)₈(mpym)₄], I, in water/acetonitrile and the 3D-host–guest _∞ ³ Cu₈(CN)₈(mpym)₄ dioxane], II. The X-ray single crystal diffraction of I reveals the formation of homometallic octameric building blocks consisting of three fused 11 membered rings. The 3D-network structure of the supramolecular coordination polymer (SCP), I, consists of two crossing sets of parallel corrugated interpenetrating CuCN chains, which are connected by mpym, hydrogen bonds, π–π stacking and cuprophilic interactions. Species II is isostructural with I as indicated by X-ray powder diffraction and spectroscopic measurements.