Synthesis, crystal structure and supramolecular organization of the 1D coordination polymer [Cu(HCOO)2(4-bpytm)], (4-bpytm = bis(4-pyridylthio)-methane)

The reaction of the flexible pyridyl dithioether ligand Bis(4-pyridylthio)methane (4-bpytm) with copper(II) formiate led to the formation of the coordination polymer [Cu(HCOO)(2)(4-bpytm)](n), which has been characterized structurally. The copper atom is in a square-planar environment and 4-bpytm acts as an N,N'-bis(monodentate) bridging ligand creating an one-dimensional polymeric arrangement. The formiate ligand plays a key role in the supramolecular organization of the chains via CHformiate...O-formiate and CH4bpytm...O-formiate hydrogen bonds.