Synthesis,Crystal Structure and Luminescent Property of an Eu~(3+) Complex

A new Eu(Ⅲ) complex, {[Eu(tta)2(C2H5OH)(NO3)]2(bmp)}·bmp(tta = 2-thenoyltrifluoro- acetonate, bmp = 2,2'-bipyrimidine), has been synthesized and characterized by elemental analysis, IR, luminescence and single-crystal X-ray diffraction analysis. The complex crystallizes in the monoclinic P21/n space group, with a = 11.894(6), b = 14.235(8), c = 19.078(10) , β = 103.423(9)o, V = 3142(3) 3, Z = 2, Mr = 1721.10, Dc = 1.819 g/cm3, F(000) = 1696, the final R = 0.0452 and wR = 0.1398 for 5375 observed reflections with I 2σ(I). In the complex, each Eu(Ⅲ) ion is coordinated with four oxygen atoms from two tta ligands and two nitrogen atoms from a bmp ligand, three oxygen atoms from one NO3- anion and one ethanol molecule, forming a distorted tricapped trigonal prism geometry. Luminescence measurement indicates that the europium complex is a strong red emitter in the solid state at room temperature.     

具有缓慢磁弛豫行为的单核Dy（III）和Ho（III）配合物

以席夫碱配体N,N''-双（3-甲氧基亚水杨基）乙烯-1,2-二胺（H₂salen）为原料,合成了2个新的镧系配合物,即[Dy（salen）₂]₃·3C₂H₉N₂·2CH₃OH（1）,[Ho（salen）₂]₃·3C₂H₉N₂·1.5CH₃OH（2）,并对其进行了基本表征。X射线单晶衍射结果表明,配合物1和2结晶于单斜晶系C2空间群,其金属配位环境类似。配合物1和2在零场和外加磁场下均具有单分子磁体（SMMs）行为。     

具有缓慢磁弛豫行为的单核Dy(Ⅲ)和Ho(Ⅲ)配合物（英文）

以席夫碱配体N,N′-双(3-甲氧基亚水杨基)乙烯-1,2-二胺(H2salen)为原料,合成了2个新的镧系配合物,即[Dy(salen)_2]_3·3C_2H_9N_2·2CH_3OH(1),[Ho(salen)_2]_3·3C_2H_9N_2·1.5CH_3OH(2),并对其进行了基本表征。X射线单晶衍射结果表明,配合物1和2结晶于单斜晶系C2空间群,其金属配位环境类似。配合物1和2在零场和外加磁场下均具有单分子磁体(SMMs)行为。