A series of 2D lanthanide (III) coordination polymers constructed from 2-(pyridin-3-yl)-1H-imidazole-4,5-dicarboxylate

作者：Cai, Song Liang; Zheng, Sheng Run^*; Fan, Jun; Tan, Jing Bo; Xiao, Tian Tian; Zhang, Wei Guang

来源：Journal of Solid State Chemistry, 2011, 184(12): 3172-3178.

DOI：10.1016/j.jssc.2011.09.006

• Lanthanide coordination polymers
• 2-(pyridine-3-yl)-1H-4,5-imidazoledicarboxylic
• Lanthanide contraction effect
• Photoluminescence

Reactions of 2-(pyridine-3-yl)-1H-4,5-imidazoledicarboxylic acid (H(3)PyIDC) with a series of Ln(III) ions affords ten coordination polymers, namely, {[Ln(H(2)PyIDC)(HPyIDC)(H(2)O)(2)]center dot H(2)O}(n) [Ln = Nd (1), Sm (2), Eu (3) and Gd (4)], {[Ln(HPyIDC)(H(2)O)(3)]center dot(H(2)PyIDC)center dot H(2)O} [Ln=Gd (5), Tb (6), Dy (7), Ho (8) and Er (9)], and {[Y(2)(HPyIDC)(2)(H(2)O)(5)]center dot(bpy)center dot(NO(3))(2)center dot 3H(2)O}(n) (10) (bpy=4,4'-bipyridine). They exhibit three types of networks: complexes 1-4 are isomorphous coordination networks containing neutral 2D metal-organic layers, while complexes 5-9 are isomorphous, which consist of cationic metal-organic layers and anionic organic layers, and complex 10 is a 2D network built up from 4-connected HPyIDC(2-) anion and 4-connected Y(III) ions. In addition, thermogravimetric analyses and solid-state luminescent properties of the selected complexes are investigated. They exhibit intense, characteristic emissions in the visible region at room temperature.

• 出版日期2011-12
• 单位华南师范大学