(Azido-[kappa]N)bis­(di-2-pyridylamine)­copper(II) hexa­fluoro­phosphate and (azido-[kappa]N)bis­(di-2-pyridylamine)­copper(II) chloride tetra­hydrate

The two new title complexes, [Cu(N₃)(dpyam)₂]PF₆ (dpyam is di-2-pyridylamine, C₁₀H₁₁N₃), (I), and [Cu(N₃)(dpyam)₂]Cl·4H₂O, (II), respectively, have been characterized by single-crystal X-ray diffraction. Both complexes display a distorted square-pyramidal geometry. Each Cu atom is coordinated in the basal plane by three dpyam N atoms and one azide N atom in equatorial positions, and by another N atom from the dpyam group in the apical position. In complex (I), the one-dimensional supra­molecular architecture is assembled via hydrogen-bonding inter­actions between the amine N atom and terminal azide N atoms and the F atoms of the PF₆^- anion. For complex (II), hydrogen-bonding inter­actions between the amine N atom, the Cl^- anion and water O atoms result in a two-dimensional lattice.

μ-Acetato-1:2κ²O:O′-diacetato-1κ²O,O′;2κO-bis(di-2-pyridylamine)-1κ²N,N′;2κ²N,N′-isothiocyanato-2κN-dicopper(II)

In the title dinuclear acetate-bridged complex, [Cu₂(C₂H₃O₂)₃(NCS)(C₁₀H₉N₃)₂], the two Cu atoms are five-coordinated, with a basal plane consisting of two N atoms of a di-2-pyridylamine (dpyam) ligand and two O atoms of two different acetate ligands. The axial positions of these Cu atoms are coordinated to N and O atoms from thio­cyanate and acetate mol­ecules, respectively, leading to a distorted square-pyramidal geometry with τ values of 0.30 and 0.22. Both Cu^II ions are linked by an acetate group in the equatorial–equatorial positions and have syn–anti bridging configurations. Hydrogen-bond inter­actions between the amine H atom and the coordinated and uncoordinated O atoms of the acetate anions generate an infinite one-dimensional chain.