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Two novel Zn‐MOFs: structures and characterization

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Abstract:

Two novel three‐dimensional Zn‐MOFs (zinc metal‐organic frameworks), Zn53‐OH)(BTC)3(Phen)4·5H2O (denoted as HUT‐11) and Zn44‐O)(BTC)2(Phen)2·4H2O (denoted as HUT‐12), have been synthesized by metal–ligand‐directed assembly under hydrothermal conditions. Here, BTC and Phen are denoted as 1,3,5‐benzenetricarboxylate and phenanthroline. HUT‐11 contains two kinds of secondary building units (SBUs), Zn33‐OH)(COO)5 clusters and Zn2(COO)4 clusters. This material exhibits a new three‐dimensional (3,4,5)‐connected topology with the Schläfli symbol (4·6·8)2(4·82)(4·64·85)(42·62·82). Two perpendicular planes cross at five coordinated Zn1—Zn3—Zn5 nodes, giving a new three‐dimensional network. HUT‐12 is composed of Zn44‐O)(COO)6 clusters as the secondary building units and displays a two‐dimensional (3,6)‐connected TiS2 related net topology with the Schläfli symbol (42·6)(44·62·88·10). Both MOFs show blue light emission and a high thermal stability above 673 K.

Document Type: Research Article

DOI: http://dx.doi.org/10.1107/S0108768112007999

Publication date: April 1, 2012

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