由2,5-吡啶二羧酸构筑的两种Ln(Ⅲ)配位聚合物的合成、结构及性质的研究

摘要

通过水热法合成了两种新型配合物{[La(pydc)(OAc)(H2O)]·2H2O}n)和{[Tm2Cu(pydc)4(H2O)6]·2H2O}n(2)(H2pydc=2,5-吡啶二羧酸),并对其结构进行了表征.结构分析表明配合物1是由2,5-吡啶二羧酸和醋酸构筑的具有一维方形孔道的复杂三维结构.配合物2中2,5-pydc2-阴离子配体采取μ2-η1-η1-和μ4-桥连两种配位模式,呈现出三维的开放式架构.此外,还进一步对配合物1,2的热稳定性和配合物2的磁学性质进行了研究.%Two new complexes,namely {[La (pydc)(OAc) (H2O)] · 2H2O}n(1) and {[Tm2Cu (pydc)4(H2O)6] · 2H2O}n(2)(H2pydc=2,5-pyridinedicarboxylic acid),have been synthesized and structurally characterized.Structure analyses reveal that complex 1 has intricate 3D micropore framework with 1D square channels,which is constructed by 2,5-pyridinedicarboxylate and acetate ligands.Complex 2 shows a 3D open framework in which 2,5-pydc2-dianion ligand adopts μ2-η1-η1-and μ4-bridge coordination mode.In addition,thermal stability for 1 and 2 and temperature-dependent magnetic susceptibilities for 2 have been investigated in detail.CCDC:884201,1;884200,2.