lanthanide(III) coordination polymers, namely [Ln2(μ2-HTFMIDC)3(DMA)4] · 2H2O}n [Ln = Pr (1); Nd (2); Sm (3); Eu (4); H3TFMIDC = 2-(trifluoromethyl)-1H-imidazole-4,5-dicarboxylic acid, DMA = N,N′-dimethylacetamide] for type I and [Ln2(μ2-HTFMIDC)3(DMA)2(H2O)2] · DMA}n [Ln = Eu (5); Gd (6)] for type II, have been successfully prepared under solvothermal conditions and structurally characterized for the first
一系列新型二维(2D)
镧系元素(III)配位聚合物,即[Ln2(μ2-HT
FMIDC)3(
DMA)4]·2 }n[Ln=Pr(1);
钕 (2); 斯米 (3); 欧盟 (4); H3T
FMIDC =
2-(三氟甲基)-1H-咪唑-4,5-二羧酸,
DMA = N,N'-二甲基乙酰胺] 用于 I 型和 [Ln2(μ2-HT
FMIDC)3(
DMA)2(
H2O)2] ·
DMA}n [Ln = Eu (5); Gd (6)] 用于 II 型,已在溶剂热条件下成功制备并首次对其进行结构表征。两种类型的结构都表现出类似的二维蜂窝状网络,它们由 μ2-HT
FMIDC2− 双(双齿)桥连
配体和 Ln(III)
金属中心的连接构成。然而,在 I 型和 II 型晶体结构中观察到 2D 层的 ABAB 堆叠方式略有不同,相邻 2D 层之间的氢键相互作用明显不同,这可能归因于
镧系元素收缩效应。同时,还研究了4和5的固态发光性能。