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Ligand‐Conformer‐Induced Formation of Zirconium–Organic Framework for Methane Storage and MTO Product Separation
Author(s) -
Fang Han,
Zheng Bin,
Zhang ZongHui,
Li HongXin,
Xue DongXu,
Bai Junfeng
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202103525
Subject(s) - metal organic framework , zirconium , ligand (biochemistry) , deprotonation , linker , conformational isomerism , gas separation , adsorption , chemistry , molecule , materials science , topology (electrical circuits) , crystallography , chemical engineering , organic chemistry , ion , biochemistry , receptor , mathematics , combinatorics , membrane , computer science , engineering , operating system
In pursuit of novel adsorbents with efficient adsorptive gas storage and separation capabilities remains highly desired and challenging. Although the documented zirconium‐tricarboxylate‐based metal–organic frameworks (MOFs) have displayed a variety of topologies encompassing underlying and geometry mismatch ones, the employed organic linkers are exclusively rigid and poorly presenting one type of conformation in the resultant structures. Herein, a used and semirigid tricarboxylate ligand of H 3 TATAB was judiciously selected to isolate a zirconium‐based spe ‐MOF after the preliminary discovery of srl ‐MOF. Single‐crystal X‐ray diffraction reveals that the fully deprotonated TATAB linker in spe ‐MOF exhibits two distinct conformers, concomitant with popular O h and rare S 6 symmetrical Zr 6 molecular building blocks, generating an unprecedented (3,3,12,12)‐c nondefault topology. Specifically, the spe ‐MOF exhibits structurally higher complexity, hierarchical micropores, open metal sites free and rich electronegative groups on the pore surfaces, leading to relatively high methane storage capacity without considering the missing‐linker defects and efficient MTO product separation performance.