[μ-N,N,N′,N′-Tetrakis(2-pyridylmethyl)-pentane-1,5-diamine] bis[dichloridocopper(II)] sesquihydrate

In the title dinuclear copper complex, [Cu₂Cl₄(C ₂₉H₃₄N₆)]·1.5H₂O, both Cu^II ions are coordinated in a slightly distorted square-pyramidal environment in which the N atoms of the dipicolyl-amine group and a chloride ligand form the basal plane. The apical position is occupied by a second chloride atom. The Cu - N distances involving the pyridine N atoms differ slightly from each other and the Cu - N distance involving the tertiary N atom is the longest. The apical Cu - Cl distance is elongated compared to its basal counterpart due to typical Jahn-Teller distortion. In the crystal structure, complex and water molecules are linked via inter-molecular O - H⋯O and O - H⋯Cl hydrogen bonds into chains along [001]. One of the water molecules was refined with half occupancy.