Abstract:Complexes of new symmetrical binuclear 5-bromo-2-hydroxyphenyl benzophenone-methoxy benzoyl hydrazone pyridinecopper(Ⅱ) (CCDC:812579) was synthesized from the reaction of 5-bromo-2-hydroxyphenyl benzophenone-methoxy benzoyl hydrazone with pyridine and copper chloride. And develop into a single crystal. The compound was characterized by elemental analysis, TGA and the crystal structure was determined by X-ray single crystal diffraction. The crystal belongs to the orthorhombic system with space group P21/c, with a=1.62754(17) nm, b=0.83111(9) nm, c=2.35235(17) nm, β=133.779(4)º, Dc=1.639 mg/m3. Complex magnetic results show that: there is a ferromagnetic intramolecular interaction and weak antiferromagnetic intermolecular interaction.