Effect of Fluorination on the Crystal Structure,Stability and Gas Adsorption Property in Zinc (Ⅱ) Metal-organic Frameworks

作     者：ZHANG Xin CHEN Zhen-Xia YANG Yong-Tai DENG Ming-Li WENG Lin-Hong 张鑫;陈珍霞;杨永泰;邓名莉;翁林红

作者机构：Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsDepartment of ChemistryFudan UniversityShanghai 200433China 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2022年第41卷第2期

页      面：49-56,I0008页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by the NSFC (No. 21971045) Natural Science Foundation of Shanghai (No. 18ZR1402900) the National Key Technologies R&D Program of China (2017YFA0205103) Shanghai Leading Academic Discipline Project (B108) 

主　　题：metal-organic frameworks fluorine functionalization X-ray crystallography gas adsorption 

摘      要：Three zinc(Ⅱ) metal-organic frameworks (x F-MAC-3) have been synthesized by using Zn(Ⅱ) salts,3,5-dimethyl-1H-1,2,4-triazole (Hdmtrz) and different fluorination degree carboxylate ligands,which are analogic structures and can be described as (6,6)-connected pcu-b *** find that the fluorine atoms have structural regulation effect on x F-MAC-3,which can not only enlarge the torsion angle φ of carboxylate ligands but also elevate the space group of ***,the CO_(2)-273 K uptake increased from 23.21 cm^(3)·g^(-1) (MAC-3) to36.13 cm^(3)·g^(-1) (4F-MAC-3) and H_(2)-77 K uptake increased from 24.33 cm^(3)·g^(-1) (MAC-3) to 59.79 cm^(3)·g^(-1)(4F-MAC-3),which means fluorination can enhance the gas adsorption uptake of x F-MAC-3 ***,the results of fluorination in x F-MAC-3 analogues offer a potential way to study the ligand pre-functionalization effect on the structures and properties of MOFs analogues.