Lead(II) complex with formula [Pb(phen)(4-NO2pcyd)(?-4-NO2pcyd)]2, 1, (phen = 1,10-phenanthroline, 4-NO2pcyd = 4-nitro phenylcyanamide) has been synthesis and characterized by elemental analyses, IR, 1 H NMR and 13 C NMR spectroscopy. The geometry of complex was confirmed by single crystal X-ray crystallography. The in vitro antibacterial activity of the complex and free ligand 4-NO2pcyd against Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, and Klebsiella pneumonia were tested. Moreover, the free radical scavenging ability (OH, NO) of complex and free ligand 4-NO2pcyd was assessed.