两个3d-4f杂核配合物[Fe(phen)_3]_2[FeLn(H_2O)(tiron)_3]·6H_2O的合成、晶体结构和磁性(Ln=Ho~Ⅲ,Yb~Ⅲ)  

Syntheses, Crystal Structures and Magnetic Properties of Two 3d-4f Heterometallic Complexes [Fe(phen)_3]_2[FeLn(H_2O)(tiron)_3]·6H_2O (Ln=Ho~Ⅲ, Yb~Ⅲ)

作　　者：储召华[1] 陈延民[2] 解庆范[2] 

机构地区：[1]韩山师范学院化学系,潮州521041 [2]泉州师范学院化学与生命科学学院,泉州362000

出　　处：《无机化学学报》2013年第7期1385-1390,共6页Chinese Journal of Inorganic Chemistry

基　　金：广东省科技厅科技项目(No.2011B090400521);福建省科技厅科技项目(No.2008F5053)资助项目

摘　　要：Ln2O3、硝酸铁、邻菲罗啉和钛铁试剂(tiron)通过水热法自组装合成了2个异质同晶的3d-4f杂核配合物[Fe(phen)3]2[FeLn(H2O)(tiron)3]·6H2O,其中,Ln=HoⅢ(1)和YbⅢ(2)。X-射线单晶衍射分析表明,晶体属立方晶系,P213空间群。3个tiron4-配体利用酚氧桥联Ln3+和Fe3+形成具有C3对称性的[FeLn(H2O)(tiron)3]6-异双核配位单元,其中七配位的Ln3+呈现一种畸变的单帽反三棱柱配位构型。配阳离子[Fe(phen)3]3+通过phen-phen之间的π-π相互作用和与配阴离子间的静电引力等作用组装成三维的超分子。在2～300 K温度范围内测试了配合物的变温磁化率,结果表明,Ln(Ⅲ)-Fe(Ⅲ)之间存在反铁磁性相互作用。Two isostructural heteronuclear complexes [Fe（phen）3]2[FeLn（H20）（tiron）3]·6H2O （Ln=Ho （1） and Yb （2））, Na2H2tiron=disodium 4,5-dihydro-xybenzene-1,3-disulfonate） were self-assembly synthesized via hydrothermal reaction. The complexes crystallized in the cubic system, space group P213. In [FeLn（H2O）（tiron）3]6- unit was revealed that the Fe3＋ ion is in a FeO6 distorted trigonal anti-prism coordination polyhedron completed by six phenolate O atoms from three tiron4- ligands, and Ln3＋ in a LnO7 distorted monocapped trigonal anti-prism coordination polyhedron completed by three phenolate μ-O atoms and three O atoms from sulfonate groups of three ligands and one O atom from coordinated water. The [Fe（phen）3]3＋ cations and [FeCe（tiron）3]6- anions via π-π interaction between phen ligands and electric attraction between cations and anions was assembled into multi- dimensional supramolecule. The magnetic properties of the complexes were been determined in the temperature range 2-300 K, indicating that the antiferromagnetic interaction between the central Ln（Ⅲ）-Fe（Ⅲ） ions. CCDC： 866880, 1; 867589, 2.

关 键 词：3d-4f杂核配合物 晶体结构 自组装 磁性 

分 类 号：O614.811[理学—无机化学] O614.33[理学—化学]