Porous Metal鈥揙rganic Frameworks with Multiple Cages Based on Tetrazolate Ligands: Synthesis, Structures, Photoluminescence, and Gas Adsorption Properties

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• 作者：Tien-Wen Tseng ; Tzuoo-Tsair Luo ; She-Yu Chen ; Chong-Cheng Su ; Kai-Ming Chi ; Kuang-Lieh Lu
• 刊名：Crystal Growth & Design
• 出版年：2013
• 出版时间：February 6, 2013
• 年：2013
• 卷：13
• 期：2
• 页码：510-517
• 全文大小：569K
• 年卷期：v.13,no.2(February 6, 2013)
• ISSN：1528-7505

文摘

Three tetrazolate-based coordination polymers [Mn(TzA)(H₂O)₂]_n (1, H₂TzA = 1H-tetrazole-5-acetic acid), {[Cd₅(MTz)₉]路OH}_n (2, MTz = 5-methyltetrazolate), and [Cd₃(MTz)₃Cl₃]_n (3) were synthesized via the reactions of a tetrazole ligand H₂TzA with metal ions under hydrothermal conditions. During the formation of 2 and 3, Cd(II) ions were coordinated by MTz^{鈥?/sup>, which was generated as the result of the in situ decarboxylation of the H₂TzA ligand. Single-crystal X-ray diffraction analyses revealed that 1 possessed an infinite 2D layer structure with a 渭₃-TzA2鈥?/sup> moiety, forming a 44-sql topology, and the 2D sheets were further hydrogen-bonded to form a 3D framework. Compound 2 had a 3D porous framework with a 49_路66-acs topology. Compound 3 adopted a 3D porous framework with a body-centered cubic (bcu) topology, which was comprised of 48-membered (Cd₂₄Cl₂₄) rings, and it demonstrated a moderate adsorption of H₂ over N₂ as a result of its limited window size. The solid-state luminescent properties of complexes 2 and 3 and the corresponding HMTz molecule were also investigated.}