【摘要】 利用N-succinopyridine(HL)配体,成功合成了2个同构型镧系化合物[Ln(HL)2(H2O)4]Cl3(Ln=Pr (1),Eu (2))并对其进行了结构表征。1和2均由羧酸配体双桥联金属离子形成1D链结构,再通过氢键进一步相互连接构成了3D超分子结构。变温磁化率测试表明1中Pr(Ⅲ)离子之间存在反铁磁相互作用,而在2中,Eu(Ⅲ)离子之间则表现出弱铁磁相互作用。固态发光测试观察到2可以发出很强的红光,但由于Pr(Ⅲ)离子的能隙较大,未观察到1的特征峰。更多还原

【Abstract】 Two isostructural lanthanide(Ln) compounds with N-succinopyridine(HL) ligand, namely [Ln(HL)2(H2 O)4]Cl3(Ln=Pr(1), Eu(2)), have been synthesized and structurally characterized. Both 1 and 2 feature 1 D chains with metal ions double-bridged by carboxyl ligands, which are further interconnected through hydrogen bonds to yield a 3 D supramolecular architecture. Variable temperature magnetic susceptibility measurements revealed the presence of antiferromagnetic interaction between Pr(Ⅲ) ions for 1 but weak ferromagnetic interactions between Eu(Ⅲ) ions for 2. Solid-state luminescence measurement showed that 2 emitted intense red luminescence, but no characteristic peak of 1 was observed due to the large energy gap of the Pr(Ⅲ) ion. CCDC: 885100, 1; 902937, 2.更多还原