Novel binuclear copper(II) complexes of di-2-pyridyl ketone N(4)-methyl, N(4)-phenylthiosemicarbazone: Structural and spectral investigations

Four binuclear complexes [Cu(dptsc)Cl]2 · 3H2O, [Cu(dptsc)Br]2, [Cu(dptsc)(μ-N3)]2 and [Cu(dptsc)(NO3)]2 · H2O (where Hdptsc = di-2-pyridyl ketone N(4)-methyl, N(4)-phenylthiosemicarbazone) have been synthesized and physicochemically characterized. Each Cu(II) atom in the monomeric unit exists in a penta-coordinate environment. The single crystals of [Cu(dptsc)Br]2 and [Cu(dptsc)(μ-N3)]2 are centrosymmetric dimers. A distorted square pyramidal geometry is observed around Cu(II) for both the complexes.