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- Title
A hydrostable and twofold interpenetrating three-dimensional zinc-organic framework with rob topology based on 4,4′-oxydibenzoate and 3,3′-dimethyl-4,4′-bipyridine ligands.
- Authors
Liang, Feng-Lan; Ma, De-Yun; Qin, Liang
- Abstract
Metal-organic frameworks (MOFs) are a new class of porous materials that have received widespread attention due to their potential applications in gas storage and/or separation, catalysis, luminescence, and so on. The title compound, poly[[(μ2-3,3′-dimethyl-4,4′-bipyridine-κ2 N: N′)bis(μ4-4,4′-oxydibenzoato-κ4 O: O′: O′′: O′′′)dizinc] tetrahydrate], {[Zn2(C14H8O5)2(C12H12N2)]·4H2O} n, has been prepared by the solvothermal assembly of Zn(NO3)2·6H2O, 4,4′-oxydi(benzoic acid) and 3,3′-dimethyl-4,4′-bipyridine. The two ZnII atoms adopt the same five-coordinated distorted square-pyramidal geometry ( i.e. ZnO4N), bonding to four O atoms from four different 4,4′-oxydibenzoate (oba) ligands and one N atom from a 3,3′-dimethyl-4,4′-bipyridine (dmbpy) ligand. The supramolecular secondary building unit (SBU) is a paddle-wheel [Zn2(COO)4] unit and these units are linked by oba ligands within the layer to form a two-dimensional net parallel to the b axis, with the dmbpy ligands pointing alternately up and down, which is further extended by dmbpy ligands to form a three-dimensional framework with rob topology. The single net leaves voids that are filled by mutual interpenetration of an independent equivalent framework in a twofold interpenetrating architecture. The title compound shows thermal stability up to 673 K and is stable in aqueous solutions in the pH range 5-9. Excitation and luminescence data observed at room temperature show that it emits a bright-blue fluorescence.
- Subjects
METAL organic chemical vapor deposition; ORGANOZINC compounds; THREE-dimensional imaging
- Publication
Acta Crystallographica Section C: Structural Chemistry, 2016, Vol 72, Issue 5, p373
- ISSN
2053-2296
- Publication type
Article
- DOI
10.1107/S205322961600437X