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Syntheses, Structures and Luminescence of Two Coordination Polymers based on 1,3,5-tris(1-imidazolyl)benzene
Journal of Chemical Crystallography ( IF 0.4 ) Pub Date : 2021-07-07 , DOI: 10.1007/s10870-021-00895-0
Zhong-Lin Li 1 , Rui Feng 1 , Sheng-Qing Fan 1 , De-Shuai Zhang 1 , Qing-Qing Yang 1 , Fang-Hua Zhao 1
Affiliation  

Two new coordination polymers (CPs), namely, {[Zn(tib)(SO4)]·2H2O}n (1) and {[Cd(tib)(2,6-pydc)(H2O)]·H2O}n (2), have been hydrothermally synthesized based on the rigid 1,3,5-tris(imidazol-1-yl)benzene (tib) and 2,6-pyridinedicarboxylate (2,6-pydc2−) ligands. Both CPs were structurally characterized by single-crystal X-ray diffraction. In 1, the Zn(II) centers are connected by tib to generate a 2D → 2D polythreading honeycomb 63 bilayer structure with the SO42− as rods. The bilayers are further connected by O–H···O hydrogen bonds to result in a 3D supramolecular structure. In 2, the Cd(II) centers are coordinated by 2,6-pydc2− to form binuclear Cd2 units which are linked by µ2-tib into 1D chain. The 1D chains are further connected by O–H···O hydrogen bonds, leading to the 2D hydrogen bonded network. Finally, it shows a 2D → 3D interdigitated architecture based on the 2D hydrogen bonded layers through the uncoordinated imidazole rings of tib ligands. The thermogravimetric properties and solid-state photoluminescence of 1 and 2 were investigated.

Graphical abstract

Two new photoluminescent Zn(II) and Cd(II) coordination polymers of 1,3,5-tris(1-imidazolyl)benzene were investigated in this work.



中文翻译:

基于 1,3,5-三(1-咪唑基)苯的两种配位聚合物的合成、结构和发光

两种新的配位聚合物(CP),即{[Zn(tib)(SO 4 )]·2H 2 O} n ( 1 ) 和{[Cd(tib)(2,6-pydc)(H 2 O)] ·H 2 O} n ( 2 ),基于刚性1,3,5-三(咪唑-1-基)苯(tib)和2,6-吡啶二羧酸酯(2,6-pydc 2- ) 配体。通过单晶 X 射线衍射对两种 CP 进行结构表征。在1 中,Zn(II) 中心通过 tib 连接以生成具有 SO 4 2−的 2D → 2D 多丝蜂窝 6 3双层结构作为杆。双层通过 O-H···O 氢键进一步连接,形成 3D 超分子结构。在2 中,Cd(II) 中心由 2,6-pydc 2−协调形成双核 Cd 2单元,由μ 2 -tib 连接成一维链。一维链通过O-H···O氢键进一步连接,形成二维氢键网络。最后,它显示了基于 2D 氢键层通过 tib 配体的未配位咪唑环的 2D → 3D 交叉结构。研究了12的热重性质和固态光致发光。

图形概要

在这项工作中研究了 1,3,5-三 (1-咪唑基) 苯的两种新型光致发光 Zn(II) 和 Cd(II) 配位聚合物。

更新日期:2021-07-08
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