Abstract

Two new Zn(II) compounds, namely [Zn(tdc)(biimpy)]_n·x(solvent) (1) and {[NH₂(CH₃)₂]₂[Zn₂(tdc)₃(DABCO)]}_n (2) (H₂tdc = 2,5-thiophenedicarboxylic acid, biimpy = 2,6-bis(1-imidazolyl)pyridine, DABCO = 1,4-diazabicyclo[2.2.2]octane), were successfully synthesized via the solvothermal reactions of H₂tdc and Zn(NO₃)₂ together with biimpy or DABCO as the auxiliary ligand. Single crystal X-ray structural analyses revealed that compound 1 features a 2 D layered structure with 3-connected hcb topology and these 2 D layers are further packed into a 3 D supramolecular framework with 2 D→3D polythreaded motifs directed by intermolecular π…π interactions, and compound 2 features a 2-fold interpenetrated 3 D framework with lon topology. Moreover, the thermal stabilities and luminescent properties of these two compounds were also investigated.

摘要

两种新的 Zn(II) 化合物，即 [Zn(tdc)(biimpy)] _n · x (溶剂) (1) 和 {[NH ₂ (CH ₃ ) ₂ ] ₂ [Zn ₂ (tdc) ₃ (DABCO)] } _n (2) (H ₂ tdc = 2,5-噻吩二羧酸，biimpy = 2,6-双(1-咪唑基)吡啶，DABCO = 1,4-二氮杂双环[2.2.2]辛烷)，通过H ₂ tdc 和 Zn(NO ₃ ) ₂以及作为辅助配体的 biimpy 或 DABCO的溶剂热反应。单晶 X 射线结构分析表明，化合物1具有具有 3 个连接的hcb拓扑结构的 2D 层状结构，这些 2D 层被进一步打包成具有由分子间 π…π 相互作用引导的 2D→3D 多线程基序的 3D 超分子框架，并且化合物2具有 2 倍互穿具有lon拓扑结构的3D 框架。此外，还研究了这两种化合物的热稳定性和发光性能。