Synthesis and crystal structure of an acetate radical bridged dinuclear copper(II) complex

A new acetate radical bridged dinuclear copper(II) complex [(C8H9NO2)(2)Cu-2(CH3COO)(4)] has been synthesized by the reaction of Cu(OAc)(2) with pyridine-3-ethyl formate and further characterized by X-ray single-crystal diffraction. Crystal data for the title compound: triclinic system, space group P (1) over bar, with a = 8.1654(14), b = 9.7010(16), c = 9.9005(17) angstrom, alpha = 83.266(2), beta = 78.887(2), gamma = 72.881(2)degrees, V = 733.9(2) angstrom(3), M-r = 665.58, Z = 1, D-c = 1.506 g/cm(3), F(000) = 342, mu = 1.5 10 mm(-1), the final R = 0.0392 and wR = 0.1005. According to the structural determination, each unit of the title compound is composed of two Cu(II) atoms, two pyridine-3 -ethyl, formate molecules and four acetate ions. Each Cu(II) coordinates to oxygen atoms of acetate and nitrogen atoms of pyridine-3-ethyl formate ligand to give a six-coordinate distorted octahedral geometry. It is worth mentioning that strong Cu-Cu bond can be observed in the title compound.