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A self‐penetrated three‐dimensional zinc(II) coordination framework based on 4,4′,4′′‐(1,3,5‐triazine‐2,4,6‐triyl)tribenzoic acid and 1,3‐bis[(imidazol‐1‐yl)methyl]benzene ligands: synthesis, structure and properties
Author(s) -
Wang Saier,
Bi Rong,
Liu Jiadi,
Shi Ying,
Wang Kuaibing,
Mao Feifei,
Wu Hua
Publication year - 2020
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229619015547
Subject(s) - crystallography , monoclinic crystal system , chemistry , molecule , denticity , triazine , zinc , benzene , crystal structure , dimethylformamide , infrared spectroscopy , metal organic framework , stereochemistry , polymer chemistry , organic chemistry , adsorption , solvent
With the rapid development of metal–organic frameworks (MOFs), a variety of MOFs and their derivatives have been synthesized and reported in recent years. Commonly, multifunctional aromatic polycarboxylic acids and nitrogen‐containing ligands are employed to construct MOFs with fascinating structures. 4,4′,4′′‐(1,3,5‐Triazine‐2,4,6‐triyl)tribenzoic acid (H 3 TATB) and the bidentate nitrogen‐containing ligand 1,3‐bis[(imidazol‐1‐yl)methyl]benzene (bib) were selected to prepare a novel Zn II ‐MOF under solvothermal conditions, namely poly[[tris{μ‐1,3‐bis[(imidazol‐1‐yl)methyl]benzene}bis[μ 3 ‐4,4′,4′′‐(1,3,5‐triazine‐2,4,6‐triyl)tribenzoato]trizinc(II)] dimethylformamide disolvate trihydrate], {[Zn 3 (C 24 H 12 N 3 O 6 ) 2 (C 14 H 14 N 4 ) 3 ]·2C 3 H 7 NO·3H 2 O} n ( 1 ). The structure of 1 was characterized by single‐crystal X‐ray diffraction, IR spectroscopy and powder X‐ray diffraction. The properties of 1 were investigated by thermogravimetric and fluorescence analysis. Single‐crystal X‐ray diffraction shows that 1 belongs to the monoclinic space group Pc . The asymmetric unit contains three crystallographically independent Zn II centres, two 4,4′,4′′‐(1,3,5‐triazine‐2,4,6‐triyl)tribenzoate (TATB 3− ) anions, three complete bib ligands, one and a half free dimethylformamide molecules and three guest water molecules. Each Zn II centre is four‐coordinated and displays a distorted tetrahedral coordination geometry. The Zn II centres are connected by TATB 3− anions to form an angled ladder chain with large windows. Simultaneously, the bib ligands link Zn II centres to give a helical Zn–bib–Zn chain. Furthermore, adjacent ladders are bridged by Zn–bib–Zn chains to form a fascinating three‐dimensional self‐penetrated framework with the short Schläfli symbol 6 5 ·7·8 13 ·9·10. In addition, the luminescence properties of 1 in the solid state and the fluorescence sensing of metal ions in suspension were studied. Significantly, compound 1 shows potential application as a fluorescent sensor with sensing properties for Zr 4+ and Cu 2+ ions.