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Two topologically different 3D Cu II metal–organic frameworks assembled from the same ligands: control of reaction conditions
Author(s) -
Zhang Shunlin,
Gao Sheng,
Wang Xin,
He Xin,
Zhao Jing,
Zhu Dunru
Publication year - 2019
Publication title -
acta crystallographica section b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.604
H-Index - 33
ISSN - 2052-5206
DOI - 10.1107/s2052520619013209
Subject(s) - binodal , metal organic framework , thermogravimetric analysis , bifunctional , ligand (biochemistry) , crystallography , chemistry , isophthalic acid , sbus , topology (electrical circuits) , diamondoid , materials science , adsorption , molecule , organic chemistry , catalysis , polyester , biochemistry , receptor , mathematics , combinatorics , phase diagram , phase (matter) , terephthalic acid
Bifunctional ligands containing both carboxylic and sulfonate groups can adopt versatile coordination modes to produce novel metal–organic frameworks (MOFs) with high‐dimensional networks and interesting topologies. Using 2,2′‐disulfonylbiphenyl‐4,4′‐dicarboxylic acid (H 4 L ) as a linker and 4,4′‐bipyridine (4,4′‐bpy) as a co‐ligand, two novel 3D Cu II MOFs, {[Cu 2 ( L )(4,4′‐bpy) 2.5 (H 2 O)]·1.7H 2 O} n , (1), and {[Cu 2 ( L )(4,4′‐bpy) 2 ]·DMA·3H 2 O} n , (2), have been synthesized and structurally characterized by X‐ray crystallography (DMA is N , N ‐dimethylacetamide). MOF (1) shows an unprecedented trinodal 4,4,5‐connected topology network with the Schläfli symbol (4.6 2 .7 3 )(4 3 .6 5 .7.8)(6.7 3 .8.10), while MOF (2) indicates a binodal 4,6‐connected fsc network with the Schläfli symbol (4 4 .6 10 .8)(4 4 .6 2 ). MOFs (1) and (2) were further characterized by elemental analysis, IR spectroscopy, powder X‐ray diffraction and thermogravimetric analysis. MOF (1) shows a high water and chemical stability. The proton conductivity of (1) and CO 2 adsorption of (2) were also investigated.