Two new three-dimensional (3,4)-connected lanthanide (III) coordination polymers based on 2-(3-Pyridyl)-1H-imidazole-4, 5-dicarboxylate: Structures and luminescent properties

• Published in: Inorganic chemistry communications 2015-05, Vol.55, p.165-168
• Main Authors: Zheng, Sheng-Run, Wen, Zhen-Zhen, Chen, Yin-Yu, Cai, Song-Liang, Fan, Jun, Zhang, Wei-Guang
• Format: Article
• Language: English
• Subjects: 2-(Pyridine-3-yl)-1H-4,5-imidazoledicarboxylic; Lanthanide coordination polymers; Photoluminescence; Topology
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2015.03.035

Two new lanthanide (III) coordination polymers, namely, {[Eu3(μ3-HPyIDC)4]·Cl}n, (1) and {[Tb2(μ3-HPyIDC)2(μ2-Ox) (H2O)2]·4H2O}n (2) (H3PyIDC=2-(3-Pyridyl)-1H-4, 5-imidazoledicarboxylic acid; Ox=oxalate), were successfully synthesized under hydro(solvo)thermal conditions and structurally characterized. Compound 1 displays a 3D framework with new (3,4)-connected {4.8.10}4{4.84.12}2{42.84} topology built by 3-connected μ3-HPyIDC− nodes and 4-connected metal ions. Compound 2 exhibits a rare (3,4)-connected dmc topology, in which μ3-HPyIDC− anions are 3-connected nodes and metal ions are 4-connected nodes. Moreover, the thermal stabilities and luminescence of compounds 1–2 were also investigated. Two novel three-dimensional Ln(III) coordination frameworks with (3,4)-connected topologies based on H3PyIDC with/without ox auxiliary ligands were successfully obtained. [Display omitted] •Two Ln(III) coordination polymers based on H3PyIDC were successfully synthesized.•Compound 1 displays 3D frameworks with new (3,4)-connected topology.•Compound 2 exhibits a rare (3,4)-connected dmc topology.