A new two‐dimensional ZnII coordination polymer based on 1, 3‐bis(2‐methyl‐1H‐imidazol‐1‐yl)benzene and 5‐nitrobenzene‐1, 3‐dicarboxylic acid: synthesis, crystal structure and physical properties. Issue 2 (29th January 2019)

• Record Type: Journal Article
• Authors: Chen, Ning-Ning; Ni, Jian-Ning; Wang, Jun; Tao, Jian-Qing
• Is Part Of: Acta crystallographica. Volume 75:Issue 2(2019)
• Page Start: 196
• Page End: 199
• Publication Date: 2019-01-29
• Subjects: two‐dimensional coordination polymer -- zinc(II) -- 1, 3‐bis(2‐methyl‐1H‐imidazol‐1‐yl)benzene -- 5‐nitrobenzene‐1, 3‐dicarboxylic acid -- photoluminescence -- crystal structure; Crystallography -- Periodicals; Crystals -- Periodicals; 548.3
• DOI: 10.1107/S2053229619000986
• Languages: English
• ISSNs: 2053-2296

Abstract

Abstract : A zinc(II) compound, prepared by the reaction of Zn(NO3 )2 ·6H2 O with 5‐nitrobenzene‐1, 3‐dicarboxylic acid (NO2 ‐H2 BDC) and 1, 3‐bis(2‐methyl‐1 H ‐imidazol‐1‐yl)benzene (1, 3‐BMIB) in H2 O, is a new two‐dimensional Zn II coordination polymer with a (4, 4) topology parallel to the (10 ) crystal planes based on left‐handed helices, right‐handed helical NO2 ‐BDC–Zn chains and [Zn2 (1, 3‐BMIB)2 ] n clusters. The compound exhibits strong fluorescence emissions in the solid state at room temperature. Abstract : A novel two‐dimensional (2D) Zn II coordination framework, poly[[μ‐1, 3‐bis(2‐methyl‐1 H ‐imidazol‐1‐yl)benzene](μ‐5‐nitrobenzene‐1, 3‐dicarboxylato)zinc(II)], [Zn(C8 H3 NO6 )(C14 H14 N4 )] n or [Zn(NO2 ‐BDC)(1, 3‐BMIB)] n [1, 3‐BMIB is 1, 3‐bis(2‐methyl‐1 H ‐imidazol‐1‐yl)benzene and NO2 ‐H2 BDC is 5‐nitrobenzene‐1, 3‐dicarboxylic acid], has been prepared and characterized by IR, elemental analysis, thermal analysis and single‐crystal X‐ray diffraction. Single‐crystal X‐ray diffraction analysis revealed that the compound is a new 2D polymer with a 6 3 topology parallel to the (10 ) crystal planes based on left‐handed helices, right‐handed helical NO2 ‐BDC–Zn chains and [Zn2 (1, 3‐BMIB)2 ] n clusters. In the crystal, adjacent layers are further connected by C—H…O hydrogen bonds, C—H…π interactions, C—O…π interactions and N—O…π interactions to form a three‐dimensional structure in the solid state. In addition, the compound exhibits strong fluorescence emissions in the solid state at room temperature.