Synthesis, Structures and Properties of Two Metal-organic Frameworks Derived from 3-Nitro-1,2-benzenedicarboxylic Acid

• Published in: Bulletin of the Korean Chemical Society Vol. 34; no. 8; pp. 2375 - 2380
• Main Authors: Xu, Wen-Jia, Zhang, Ling-Yu, Tang, Jin-Niu, Wang, Dai-Yin, Pan, Gang-Hong, Feng, Yu
• Format: Journal Article
• Language: Korean
• Published: 2013
• Subjects: X-ray crystal diffraction; Two-dimensional network polymer; 3-Nitro-1,2-benzenedicarboxylic acid
• ISSN: 0253-2964; 1229-5949

Two metal-organic frameworks based on the connectivity co-effect between rigid benzenedicarboxylic acid and bridging ligand have been synthesized $[Zn_2(3-NO_2-bdc)_2(4,4'-bpy)_2H_2O]_n$ (1), $[Co(3-NO_2-bdc)(4,4'-bpy)H_2O]_n$ (2) (where $3-NO_2-bdcH_2$ = 3-nitro-1,2-benzenedicarboxylic acid, 4,4'-bpy = 4,4'-bipyridine). The two novel complexes were characterized by IR spectrum, elemental analysis, fluorescent properties, thermogravimetric analysis, single-crystal X-ray diffraction and powder X-ray diffraction (PXRD). X-ray structure analysis reveals that 1 and 2 are two-dimensional (2D) network structures. Complex 1 and complex 2 belong to triclinic crystal with P-1 space group. The luminescence measurements reveal that two complexes exhibit good fluorescent emissions in the solid state at room temperature. Also, thermal decomposition process and powder X-ray diffraction of complexes were investigated.