Zn(II) coordination polymers with flexible V-shaped dicarboxylate ligand: Syntheses, helical structures and properties
Autor: | Lin Li, Hui-Liang Wen, Hong Liu, Chong-Bo Liu, Gao-Shan Yang, Zhi-Qiang Xiong |
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Rok vydání: | 2015 |
Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Hydrogen bond Chemistry Ligand Supramolecular chemistry Infrared spectroscopy Polymer Crystal structure Condensed Matter Physics Electronic Optical and Magnetic Materials Inorganic Chemistry Crystallography Materials Chemistry Ceramics and Composites Physical and Theoretical Chemistry Powder diffraction |
Zdroj: | Journal of Solid State Chemistry. 231:70-79 |
ISSN: | 0022-4596 |
Popis: | Hydrothermal reactions of 2,2′-[hexafluoroisopropylidenebis(p-phenyleneoxy)]diacetic acid (H2L) and zinc ions in the presence of N-donor ancillary ligands afford four novel coordination polymers, namely, [Zn2(μ2-OH)(μ4-O)0.5(L)]·0.5H2O (1), [Zn(L)(2,2′-bipy)(H2O)] (2), [Zn3(L)3(phen)2]·H2O (3) and [Zn2(L)2(4,4′-bipy)] (4) (2,2′-bipy=2,2′-bipyridine; 4,4′-bipy=4,4′-bipyridine; phen=1,10-phenanthroline). Their structures have been determined by single-crystal X-ray diffraction analyses, elemental analyses, IR spectra, powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. Complex 1 shows a 3-D clover framework consisting of [Zn4(µ4-O)(µ2-OH)2]4+ clusters, and exhibits a novel (3,8)-connected topological net with the Schlafli symbol of {3·4·5}2{34·44·52·66·710·82}, and contains double-stranded and two kinds of meso-helices. 2 displays a helical chain structure, which is further extended via hydrogen bonds into a 3-D supramolecular structure with meso-helix chains. 3 displays a 2-D {44·62} parallelogram structure, which is further extended via hydrogen bonds into a 3-D supramolecular structure with single-stranded helical chains. 4 shows a 2-D {44·62} square structure with left- and right-handed helical chains. Moreover, the luminescent properties of 1–4 have been investigated. |
Databáze: | OpenAIRE |
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