Copper cyanide polymers with controllable dimensions modulated by rigid and flexible bis-(imidazole) ligands: synthesis, crystal structure and fluorescence properties
| Autor: | Kai Yu, Bo-Yu Zhou, Hui Xu, Baibin Zhou, Zhong-Min Su, Zhanhua Su |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Intermolecular force Supramolecular chemistry Infrared spectroscopy Protonation 02 engineering and technology General Chemistry Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Crystallography chemistry Imidazole General Materials Science 0210 nano-technology Single crystal Powder diffraction |
| Zdroj: | CrystEngComm. 21:1242-1249 |
| ISSN: | 1466-8033 |
| DOI: | 10.1039/c8ce01769g |
| Popis: | A series of cyanide-bridged coordination polymers (CPs), [CuI2(CN)2(bbi)3]n (1, 1D), [{CuII(CN)2}{CuI2(CN)2}(bimb)3] (2, 2D), (H2dip)[CuI4(CN)6] (3, 3D), [{CuI2(CN)2}(bix)]n (4, 3D), and [CuI2(CN)2(bib)] (5, 2D), (bbi = 4,4′-bis(imidazoly)biphenyl, bimb = 1,4-bis(imidazole-l-yl)butane, dip = 1,5-di(1H-imidazol-l-yl)pentane, bix = 1,4-bis(imidazol-1-ylmethyl)benzene, bib = 1,4-bis(1-imidazolyl)benzene), with controllable dimensions have been prepared under hydrothermal conditions by using different types of rigid and flexible bis-(imidazole) ligands. The characterization of all the polymers has been performed by elemental analyses, infrared spectroscopy (IR), thermogravimetric analyses (TGA), powder X-ray diffraction (PXRD), and single crystal X-ray diffraction. 1 displays two noncovalently-bonded parallel one-dimensional (1D) chains, which are woven to produce a three-dimensional (3D) supramolecular architecture by intermolecular forces. For 2, bimb ligands stabilize the copper(I) and copper(II) mixed-valence states to from a (2,6)-connected two-dimensional (2D) network, which then results in a 3D supramolecular network via intermolecular forces. 3 generates an interesting 3D open framework and the protonated dip ligands as templates and charge compensating agents are encapsulated in the tunnel. In 4, bix ligands act as linkers bridging adjacent 2D networks to generate a 3D coordination framework. 5 is a 2D network structure consisting of [CuCN]n zigzag chains and bib ligands. Moreover, 1–5 show thermal stabilities and luminescence properties in the solid state at room temperature. |
| Databáze: | OpenAIRE |
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