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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >CFA-4-a fluorinated metal-organic framework with exchangeable interchannel cations
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CFA-4-a fluorinated metal-organic framework with exchangeable interchannel cations

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摘要

The syntheses and crystal structures of the fluorinated linker 1,4-bis(3,5-bis(trifluoromethyl)-1H-pyrazole4- yl) benzene (H-2-tfpb; 1) and the novel metal-organic framework family MCFA-4 (Coordination Framework Augsburg University-4), MCu-5(tfpb)(3) (M = Cu(I), K, Cs, Ca(0.5)), are described. The ligand 1 is fully characterized by single crystal X-ray diffraction, photoluminescence-, NMR-, IR spectroscopy, and mass spectrometry. The copper(I)-containing MOF crystallizes in the hexagonal crystal system within the chiral space group P6(3)22 (no. 182) and the unit cell parameters are as follows: a = 23.630(5) angstrom, c = 41.390(5) angstrom, V = 20 015(6) angstrom(3). MCFA-4 features a porous 3-D structure constructed from pentanuclear copper(I) secondary building units {Cu-5(I) (pz)(6)}(-)(pz = pyrazolate). Cu(I)CFA-4 is fully characterized by synchrotron single crystal X-ray diffraction, thermogravimetric analysis, variable temperature powder X-ray diffraction, IR spectroscopy, photoluminescence and gas sorption measurements. Moreover, thermal stability and gas sorption properties of KCFA-4 and Cu(I)CFA-4 are compared.

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