Crystal structure and magnetochemistry of rare earth hexacyanoferrate cyano-bridged complexes

Using N,N' - dimethylacetamide (DMA) as hybrid ligand, some rare earth - iron cyano - bridged complexes have been synthesized and the crystal structures and magnetic properties of three complexes ([SmFe](n), Gd2Fe, HoFe) have been determined. The results reveal that the same series complexes show the different crystal structures: one - dimensional chain, trinuclear and dinuclear structures. Meanwhile it is found that these three complexes have excellent magnetochemical properties, especially [SmFe]. exhibits long - range magnetic ordering, critical temperature (T-c = 3.5K)and stronger coercive force (H-o = 1400 Oe).