Crystal Engineering of Co(Ⅱ) Metal-organic Frameworks Based on the Hydrolysis Product of Letrozole and Coligands

【Author】

KANG Hai-Xia;FU Yu-Qin;JU Feng-Yang;WANG Yu-Fang;LI Xiao-Ling;LIU Guang-Zhen;College of Food and Drug, Luoyang Normal University;College of Chemistry and Chemical Engineering, and Henan Key Laboratory of Function-oriented Porous Materials, Luoyang Normal University;

【Institution】

College of Food and Drug, Luoyang Normal University;College of Chemistry and Chemical Engineering, and Henan Key Laboratory of Function-oriented Porous Materials, Luoyang Normal University;

【Abstract】

The cyanide groups of letrozole(1-[bis(4-cyanophenyl)methyl]-1,2,4-triazole) were hydrolyzed into the carboxylic groups under alkaline conditions. Then the hydrolysis product(1-[bis(4-carboxylphenyl)methyl]-1,2,4-triazole, H_2ltzda) reacted with Co(NO_3)_2·6H_2O in the presence of different bipyridl-typed ligands under hydrothermal conditions. As a result, two new Co(Ⅱ) MOFs were obtained, formulated as [Co_2(ltzda)_2(bpp)_2]_n(1) and {[Co_2(ltzda)_2(bpy)]·4H_2O}_n(2)(bpp = 1,3-di(4-pyridyl)propane, bpy = 4,4'-bipyridine). Two MOFs have been characterized by single-crystal X-ray diffraction, thermogravimetric analysis and magnetic measure. 1 displays a 2D metal-organic framework containing wave layers and 2 shows a pillared-layer structure existing in a 2-fold interpenetrated mode.

【Keywords】

letrozole;;Co(Ⅱ) metal-organic frameworks;;hydrolysis;;magnetic property;;coligand

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