Three novel coordination polymers constructed from [Cu(CN)] chains

Abstract

Three new coordination polymers based on [Cu(CN)] chains, [Cu(CN)]₃(phen) (1), [Cu(CN)]₂(4,4′-bipy) (2) and [Cu(CN)]₄(bpp)₂ (3) (phen = 1,10′-phenanthroline, bipy = 4,4′-bipyridine and bpp = 1,3-bis(4-pyridyl)propane), have been synthesized by hydrothermal methods and characterized by elemental analysis, IR, X-ray powder diffraction (XRPD) and single crystal X-ray diffraction. Complex 1 features a noncovalence-induced 2D layer and further forms a 3D supramolecular framework by π⋯π interactions. Complex 2 generates an interesting 3D coordination polymer of 2-fold interpenetration with (4.6²)(4².6¹⁰.8³) topology. Complex 3 displays 2-fold parallel interpenetration with (4.6²)(4³.6¹¹.7².8⁵)(4⁴.6¹¹)(4⁵.6¹⁵.7) topology. The thermal stability and photoluminescent properties of 1–3 in the solid state at ambient temperature were also investigated.