(Acetylacetonato)(dicyanamido)(1,10- phenanthroline)copper(II) dihydrate

R factor = 0.034; wR factor = 0.082; data-to-parameter ratio = 22.3. In the title compound, [Cu(C5H7O2)(C2N3)(C12H8N2)]2H2O, the CuII atom is five-coordinated in a square-pyramidal geometry with two acetylacetonate O and two phenanthroline N atoms forming the base. The apical position is occupied by the central N atom of the dicyanamide ligand. The dicyanamide N atoms are each involved in hydrogen bonds to water molecules. There are also hydrogen bonds between both the water molecules and their centrosymmetric pairs, creating a hydrogen-bonded chain along the b-axis direction. Related literature Dicyanamide (dca) has been shown to be a versatile ligand and may coordinate to metal ions as a terminal ligand through a nitrile or amide nitrogen. It also acts as a bridging ligand. Until now, as many as eight structurally characterized coor-dination modes of dicyanamide had been reported in th