Schmieder Phillip, Grzywa Maciej, Denysenko Dmytro, Hambach Manuel, Volkmer Dirk
Institute of Physics, Chair of Solid State and Material Science, Augsburg University, Universitaetsstrasse 1, 86159 Augsburg, Germany.
Dalton Trans. 2015 Aug 7;44(29):13060-70. doi: 10.1039/c5dt01673h.
The novel interpenetrated metal-organic framework CFA-7 (Coordination Framework Augsburg University-7), [Zn5Cl4(tqpt)3], has been synthesized containing the organic linker {H2-tqpt = 6,6,14,14-tetramethyl-6,14-dihydroquinoxalino[2,3-b]phenazinebistriazole}. Reaction of H2-tqpt and anhydrous ZnCl2 in N,N-dimethylformamide (DMF) yields CFA-7 as pseudo-cubic crystals. CFA-7 serves as precursor for the synthesis of isostructural frameworks with redox-active metal centers, which is demonstrated by postsynthetic metal exchange of Zn(2+) by different M(2+) (M = Co, Ni, Cu) ions. The novel framework is robust upon solvent removal and has been structurally characterized by single-crystal X-ray diffraction, TGA and IR spectroscopy, as well as gas sorption (Ar, CO2 and H2).
新型互穿金属有机框架CFA-7（奥格斯堡大学配位框架-7），[Zn5Cl4(tqpt)3]，已通过包含有机连接体{H2-tqpt = 6,6,1,14-四甲基-6,14-二氢喹喔啉并[2,3-b]吩嗪双三唑}合成得到。H2-tqpt与无水ZnCl2在N，N-二甲基甲酰胺（DMF）中反应生成伪立方晶体形式的CFA-7。CFA-7用作合成具有氧化还原活性金属中心的同构框架的前体，不同的M(2+)（M = Co、Ni、Cu）离子对Zn(2+)进行的后合成金属交换证明了这一点。这种新型框架在去除溶剂后很稳定，并且已通过单晶X射线衍射、热重分析和红外光谱以及气体吸附（Ar、CO2和H2）对其结构进行了表征。
