<正>Two poly(Schiff base)s (PDBT and PDPE) were synthesized by polycondensation of 1,10-phenanthroline-5,6- dione (PD) with 2,2′-diamino-4,4′-bithiazole (DABT) and 4,4′-diaminodiphenyl ether (DAPE),respectively.The structures of the polymers were determined by FTIR and element analysis.The metal (Fe2+,Ni2+) complexes were prepared from the polymers with FeSO4 or NiSO4,and the metal contents of the complexes were measured by complexometric titration.The magnetic behaviors of the complexes were examined as a function of magnetic field strength at 4 K and as a function of temperature (4-300 K) at a magnetic field strength of 2.4×106 A/m.The results show that the relative saturation magnetization of the PDBT complexes is higher than that of the corresponding PDPE complexes,and PDBT-Ni2+ and PDPE- Ni2+ are soft ferromagnets,while PDBT-Fe2+ and PDPE-Fe2+ exhibit the features of antiferromagnet.
