Two novel Zn‐MOFs: structures and characterization
Abstract:Two novel three‐dimensional Zn‐MOFs (zinc metal‐organic frameworks), Zn5(μ3‐OH)(BTC)3(Phen)4·5H2O (denoted as HUT‐11) and Zn4(μ4‐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), Zn3(μ3‐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 Zn4(μ4‐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
Publication date: April 1, 2012