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.