A one-dimensional copper coordination polymer containing both dicyanamide and 1,10-phenanthroline ligands

The crystal structure of catena-poly[[[acetato(1,10-phenanthroline-κ2 N,N′)copper(II)]-μ-dicyanamido-κ2 N 1:N 5] trihydrate], {[Cu(C2H3O2)(C2N3)(C12H8N2)]·3H2O} n , consists of a zigzag chain formed by the polymer [Cu(CH3COO)(dca)(phen)] n (phen is 1,10-phenanthroline and dca is dicyanamide), with three water molecules per repeat unit of the polymer. The CuII atom has a slightly distorted square-pyramidal coordination environment consisting of two N atoms of the phen ligand, two nitrile N atoms of different dca ligands, one of them axial, and one O atom of the acetate anion. The compound forms a one-dimensional chain using dca as an end-to-end bridging ligand. Non-covalent interactions, π–π stacking and hydrogen bonding mediate the bundling of the polymer chains into a three-dimensional structure, with the water molecules playing an important role in the hydrogen bonding.