中文摘要：

以4-氨基苯甲酸（HPAA）和Ln（NO3）3·6H2O（Ln=Tb,Ho）为原料,经溶剂热反应合成了两个新型的配合物[Ln2（PAA）6]n（Ln=Tb（1）,Ho（2））。并利用X-射线单晶衍射、红外光谱（FT-IR）、热重分析（TG-DTA）和SQUID磁性测量仪等实验手段对配合物进行了表征。结果表明,配合物1-2为完全同构化合物,由羧酸根桥连Ln2（PAA）6单元形成一维链结构。磁性研究表明配合物1表现出慢磁驰豫行为。

英文摘要：

Two new carboxylate-bridged 1D chain complexes,e. g. [Ln2（ PAA）6]n（（ PAA-= 4-aminobenzoic acid anion,Ln = Tb（ 1）,Ho（ 2））,have been synthesized under solvothermal conditions and characterized by single crystal X-ray crystallography analysis, FT-IR,TG-DTA and elemental analysis. Results show that both complexes are isostructural 1D chains and bridged by carboxylate groups. Magnetic susceptibility of polycrystalline samples of complex 1 were carried out ousing a SQUID magnetometer. The magnetic studies indicate that complex 1 exhibits slow magnetic relaxation behavior.