Synthesis and Crystal Structure of [Cu2（DMF）（H2O）（C7H4NO4）2（C7H3NO4）]2·3.5DMF

A new copper（H） complex [Cu2（DMF）（H2O）（C7H4NO4）2（C7H3NO4）]2-3.5DMF has been synthesized and its structure was determined by single-crystal X-ray diffraction. The crystal is of triclinic, space group P1^- with a = 10.722（3）, b = 18.170（4）, c = 20.923（7）A,α = 105.297（9）, β = 101.701（10）, γ = 105.74（1）°, V= 3615（1）A^3, Z = 2, C58.50H64.50Cu4N1l.50O3150, Mr = 1686.90, Dc = 1.550 g/cm^3,μ= 1.255 mm^-1, F（000） = 1728.00, T = 150（2） K, the final R = 0.0640 and wR = 0.173 for 11310 observed reflections with I 〉 2σ（I）. In the crystal, each formular unit consists of two dinuclear copper（H） compounds, between which the O-H…O hydrogen bonds exist. Each Cu^Ⅱ cation is six-coordinated in an octahedral geometry. The intermolecular hydrogenbonding interaction leads to a 3-D framework of the title compound.