A fundamental understanding of polynuclear transition metal is of key importance to design of molecular devices such as low impedance molecular wires, molecular switches, as well as the creation of novel materials with useful magnetic or optical properties. Such devices could find application in a variety of areas such as nanoscale electronics, biological probes, magnetic shield, and video display. In this study, we have synthesized and characterized by X-ray crystallography, uv-visible absorption spectroscopy, IR spectroscopies.. These complexes included polynuclear copper complexes and made with phenylcyanamide ligands like[Cu-(4-F pcyd) 2 ] n , [Cu-(4-Cl pcyd) 2 ] n , [Cu-(4-Br pcyd) 2 ] n . A crysal structure determination of complex [Cu (4-nitro-pcyd) 2 (DMF)] n has been performed. This complex has a polynuclear structure and ligands has been bridged within complex. The crystal structure is showed bridging phenylcyanamide coordination with Cu(??) in a distorted square pyramidal coordination sphere. Results of Crystaligraphy also shows block-shaped crystals of [Cu (4-nitro-pcyd) 2 (DMF)] n were grown from a solution dimethlformamide and n-Hexane by slow evaporation of the n-Hexane.