| 两个3d-4f杂核配合物[Fe(phen)3]2[FeLn(H2O)(tiron)3]·6H2O的合成、晶体结构和磁性(Ln=HoⅢ,YbⅢ) |
| Syntheses, Crystal Structures and Magnetic Properties of Two 3d-4f Heterometallic Complexes [Fe(phen)3]2[FeLn(H2O)(tiron)3]·6H2O (Ln=HoⅢ, YbⅢ) |
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| 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。 |
| 关键词: 3d-4f杂核配合物 晶体结构 自组装 磁性 |
| 基金项目: 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。 |
| Abstract: Two isostructural heteronuclear complexes [Fe(phen)3]2[FeLn(H2O)(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 μ2-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. |
| Keywords: 3d-4f heterometalic complexes crystal structure self-assembly magnetic properties |
| 投稿时间：2012-07-01 修订日期：2013-02-02 |
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| 储召华,陈延民,解庆范.两个3d-4f杂核配合物[Fe(phen)3]2[FeLn(H2O)(tiron)3]·6H2O的合成、晶体结构和磁性(Ln=HoⅢ,YbⅢ)[J].无机化学学报,2013,29(7):1385-1390. |
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