Synthesis, identification and determination of the crystal structure of a New Copper (II) Complex Based on Schiff's tetradentate Ligand of Pyridine and 1,6-Diamino-3-Azaxane

N1-)3- Pyridine-2-yl-Methylene)Amino)propyl)ethane-1 and 2-diamine four-dentate ligand with molecular formula of C11H18N4 using the compression reaction of Pyridine-2-Carbaldehyde with 1,6-Diamino-3-Aza haxane with a molar ratio of 1: 1 was prepared having 65% yield and then the complex of this ligand with copper (II) bromide was synthesized and characterized. FT-IR and elemental analysis and single crystal X-ray diffraction techniques were used for characterization of the complex. The results show that this complex crystallizes in a triclinic system with a P  space group and has a deviated square pyramid structure. Furthermore, there are intermolecular hydrogen bonds in the crystal lattice of this complex. In these bonds, carbon and nitrogen atoms act as hydrogen bond donors, halide atoms act as hydrogen bond acceptors and oxygen atoms act as both donor and receiver.