Abstract
Self-assembly of Zn(Ac)2·2H2O with π-conjugated and rigid multicarboxylate ligand 1,3,5-benzenetricarboxylic acid (H3BTC) and flexible N-donor linker 1,3-bis(2-methylimidazolyl)propane generated two new metal-organic frameworks (MOFs), [Zn7 (μ3-OH)2(BTC)4 (bmp)2(H2O)4·2H2O·2DMF]n (1) and [Zn(BTC) (Hbmp)·H2O]n (2). 1 has a pentanuclear [Zn5 (μ3-OH)2] subunit, which is further connected by the BTC ligands to shape a layer. The 2D layer is further bridged by BTC and monuclear metal to form a 3D framework. The 3D zinc-BTC substructure has 1D open channels filled by bmp ligands. Polymer 2 shows a 4-connected 3D cds network. While a variation of bmp was imported into the zinc-btc system yielding a two different topological networks, demonstrating that the ligand salt type has an apparent effect in the building of the final networks. Their photochemical properties were measured.
Published Version
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