Synthesis, Structure and Properties of a Copper Complex Cu2（μ-PhCOO）2（μ-CH3COO）2（CH3OH）2

The title complex Cu2(μ-PhCOO)2(μ-CH3COO)2(CH3OH)2 1 (C20H24Cu2O10, Mr = 551.47) has been synthesized by the reaction of Cu(OAc)2·H2O with benzoic acid, and its crystal structure was determined by X-ray diffraction method. Complex 1 belongs to orthorhombic, space group Pbca with a = 13.083(6), b = 8.078(4), c = 21.566(2) A, V = 2279(2) ·3, Z = 4, Dc = 1.607 g/cm3, F(000) = 1128, μ(MoKα) = 1.918 mm–1, the final R = 0.0506 and wR = 0.1382. Each Cu(II) ion is coordinated by five oxygen atoms from two benzoic acids, two acetic acids and one methanol molecule in a slightly distorted square pyramidal environment. The title molecules construct a 2-D layer via the hydrogen bonds O–H…O. Solid-state photoluminescent investigation reveals that complex 1 displays strong emissions. IR and TG-DTA studies are also presented.