Rational Design of Metal-Organic Frameworks Based on 5-(4-Pyridyl)tetrazolate: From 2D Grids to 3D Porous Networks
✍ Scribed by Chao Jiang; Zhaopeng Yu; Sujing Wang; Chao Jiao; Jiaming Li; Zhiyong Wang; Yong Cui
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 191 KB
- Volume
- 2004
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Abstract
The hydrothermal reactions of Zn(ClO~4~)~2~·6H~2~O/Cu(NO~3~)~2~·6H~2~O with 5‐(4‐pyridyl)tetrazole in an ethanol/water or ethanol/water/pyridine medium yield one 2D and one 3D metal‐organic coordination framework [Zn~2~(OH)(4‐ptz)~3~] (1) and [Cu(4‐ptz)·0.5(py)] (3) [4‐ptz = 5‐(4‐pyridyl)tetrazolate, py = pyridine], respectively. Complex 1 possesses two identical and independent rectangular grid sheets with twofold parallel interpenetration, in which the four‐connected nodes of the net are provided by Zn~2~(OH) units connected to one another through 4‐ptz and (4‐ptz)~2~ bridges. These composite sheets are stacked one on top of another by hydrogen‐bonding interactions to afford a 3D structure. There are many structural similarities between complex 1 and the recently reported 2D layered network [Zn(OH)(4‐ptz)(H~2~O)] (2), in particular the components of the network, the coordination mode of the 4‐ptz ligand and the in situ formation of hydroxy groups. Complex 2 can be synthesized by the hydrothermal reaction of Zn(ClO~4~)~2~·6H~2~O and 5‐(4‐pyridyl)tetrazole in an ethanol/water/pyridine medium. The structural characterization of complex 3 shows a porous structure that contains the guest pyridine molecules. Additionally, compounds 1 and 2 exhibit strong fluorescence at room temperature in the solid state. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)