摘要
以N,N＇-二甲基乙酰胺为杂化配体,合成了稀土-铁氰根桥联配合物,测定了其中三个配合物的晶体结构和磁学性质,([SmFe]_n,Gd_2Fe,HoFe).结果发现在相同的反应条件的一个系列中,呈现三种截然不同的晶体结构,分别为一维链状结构,三核结构和双核结构.同时发现这些配合物具有优良的磁化学性质,特别是[SmFe]_n呈现长程磁有序,临界温度(T_c=3.5K)和较大的矫顽力(H_c=1400 Oe).
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]n exhibits long - range magnetic ordering, critical temperature ( Tc = 3.5K)and stronger coercive force (Hc- 1400 Oe) .
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2000年第12期1589-1595,共7页
Acta Chimica Sinica
基金
国家自然科学重点基金(29831010
20023005)
国家重点基础研究发展规划基金(G1998061306)
中国博士后科学基金
关键词
稀土-六氰合铁氰根桥联配合物
晶体结构
磁化学
molecular - based magnets, cyano - bridged complexes, rare earth - iron, crystal structure, magnetochemistry
