Synthesis, structure and hydrogen adsorption of a novel porous metal–organic framework, Mn9(btt)2(HCOO)12·0.7DMF·0.9H2O, where btt = 1,3,5-benzenetristetrazolate
作者： Ju-Hsiou Liao , Wan-Ting Chen , Cherng-Shiaw Tsai , Ching-Chun Yang , Chih-Chieh Wang
DOI: 10.1039/B925769A
关键词: Chemistry 、 Ion 、 Crystallography 、 Photoluminescence 、 Molecule 、 Inorganic chemistry 、 Porosity 、 BET theory 、 Dimethylformamide 、 Solvent 、 Hydrolysis
摘要: A novel porous metal–organic framework, Mn9(btt)2(HCOO)12·0.7DMF·0.9H2O, was synthesized solvothermally in mixed H2O–DMF. Its structure characterized by single-crystal X-ray diffraction techniques, which reveal that it is constructed cross-linking Mn2+ ions with 1,3,5-benzenetristetrazolates and formates, formed situ from the hydrolysis of dimethylformamide, to form a 3D framework parallel hexagonal channels. Although at 4f Wyckoff sites are 75% occupied, remains robust upon evacuation solvent molecules, 264 m2g−1 BET surface area hydrogen adsorption capacity ca. 0.9 wt% 77 K 1 atm. Photoluminescence studies exhibit blue band λmax = 418 nm.
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