SYNTHESIS MAGNETISM AND ANTIBACTERIAL ACTIVITY OF BINUCLEAR COPPER(Ⅱ)-NICKEL(Ⅱ) COMPLEXES BRIDGED BY OXAMIDATE
Yan Cuiwei; Wang Hanzhong(Qufu Normal University, Qufu 273165) (Shandong Agricultural University,Taian 271018)Li Yantuan;Zhang Yuhua(Qufu Normal University,Qufu 273165)
Three novel μ-oxamido heterobinuclear complexes [Cu (oxpn)Ni (Me2bpy)2](ClO4)2, where oxpn denotes the N, N’- bis (3 -aminopropyl) oxamido and L denotes 4, 4’-dimethyl - 2,2’-bipyridine (Me2bpy ) 3 1, 10-phenanthroline (phen) and 5 -nitro-1, 10-phenanthroline (NO2-phen),have been synthesized and characterized. The variable- temperature magnetic susceptibility of [Cu (oxpn )Ni (Me2bpy )2] (ClO4 )2 was measured over the 4-300K and the susceptibility date were least-squares fit to the susceptibility equation derived from the spin Hamiltonian operator H= 2JS1·S2. The exchange integral J was found to be -98. 6 cm-1, indicating that antiferromagnetic spin -exchang interaction operates between Cu(Ⅱ) and Ni(Ⅱ) ions. The antibacterial activity of the complexes were also examined. Experiments shows that antibacterial activity of complexes is superior to ligand.
【CateGory Index】： O641.4