Synthesis, structural characterization and thermal stability of a 2D layered Cd(II) coordination polymer constructed from squarate (C<sub>4</sub>O<sub>4</sub><sup>2</sup><sup>−</sup>) and 2,2’-<em>bis</em>(2-pyridyl)ethylene (2,2’-bpe) ligands
A mixed-ligands Cd(II) coordination polymer, [Cd(2,2’-bpe)(C<sub>4</sub>O<sub>4</sub>)(H<sub>2</sub>O)<sub>2</sub>] (1) (2,2’-bpe = 1,2-<em>bis</em>(2-pyridyl)ethylene; C<sub>4</sub>O<sub>4</sub><sup>2−</sup...
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| Format: | Article |
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AIMS Press
2018-03-01
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| Series: | AIMS Materials Science |
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| Online Access: | http://www.aimspress.com/Materials/article/1848/fulltext.html |
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| author | Chih-Chieh Wang Yu-Fan Wang Szu-Yu Ke Yanbin Xiu Gene-Hsiang Lee Bo-Hao Chen Yu-Chun Chuang |
| author_facet | Chih-Chieh Wang Yu-Fan Wang Szu-Yu Ke Yanbin Xiu Gene-Hsiang Lee Bo-Hao Chen Yu-Chun Chuang |
| author_sort | Chih-Chieh Wang |
| collection | DOAJ |
| description | A mixed-ligands Cd(II) coordination polymer, [Cd(2,2’-bpe)(C<sub>4</sub>O<sub>4</sub>)(H<sub>2</sub>O)<sub>2</sub>] (1) (2,2’-bpe = 1,2-<em>bis</em>(2-pyridyl)ethylene; C<sub>4</sub>O<sub>4</sub><sup>2−</sup> = dianion of squaric acid), has been synthesized and structurally characterized by single-crystal X-ray diffraction method. The coordination environment of Cd(II) ions in compound 1 is six-coordinate bonded to four oxygen atoms from two μ<sub>1,3</sub>-squarate (C<sub>4</sub>O<sub>4</sub><sup>2−</sup>) and two water molecules, and two nitrogen atoms from two 2,2’-bpe ligands. The squarate and 2,2’-bpe both act as bridging ligands with <em>bis</em>-monodentate coordination modes, connecting the Cd(II) ions to form a two-dimensional (2D) layered metal-organic framework (MOF). Adjacent 2D layers are then arranged in an ABAB parallel non-interpenetrating manner to construct its three dimensional (3D) supramolecular network. Intra- and inter-layers hydrogen bonding interactions between the C<sub>4</sub>O<sub>4</sub><sup>2−</sup> and water molecules in 1 provide an extra-stabilization energy on the construction of its 3D supramolecular network. The thermal stability of 1 is studied and discussed in details by TG analysis and <em>in-situ</em> PXRD measurement. |
| first_indexed | 2024-12-19T06:49:40Z |
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| language | English |
| last_indexed | 2024-12-19T06:49:40Z |
| publishDate | 2018-03-01 |
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| series | AIMS Materials Science |
| spelling | doaj.art-3ed4792ebe354090950b94a1e1e880412022-12-21T20:31:47ZengAIMS PressAIMS Materials Science2372-04842018-03-015114515510.3934/matersci.2018.1.145matersci-05-01-145Synthesis, structural characterization and thermal stability of a 2D layered Cd(II) coordination polymer constructed from squarate (C<sub>4</sub>O<sub>4</sub><sup>2</sup><sup>−</sup>) and 2,2’-<em>bis</em>(2-pyridyl)ethylene (2,2’-bpe) ligandsChih-Chieh Wang0Yu-Fan Wang1Szu-Yu Ke2Yanbin Xiu3Gene-Hsiang Lee4Bo-Hao Chen5Yu-Chun Chuang6Department of Chemistry, Soochow University, Taipei 11102, TaiwanDepartment of Chemistry, Soochow University, Taipei 11102, TaiwanDepartment of Chemistry, Soochow University, Taipei 11102, TaiwanDepartment of Chemistry, Soochow University, Taipei 11102, TaiwanInstrumentation Center, National Taiwan University, Taipei 10617, TaiwanNational Synchrotron Radiation Research Center, Hsinchu 30076, TaiwanNational Synchrotron Radiation Research Center, Hsinchu 30076, TaiwanA mixed-ligands Cd(II) coordination polymer, [Cd(2,2’-bpe)(C<sub>4</sub>O<sub>4</sub>)(H<sub>2</sub>O)<sub>2</sub>] (1) (2,2’-bpe = 1,2-<em>bis</em>(2-pyridyl)ethylene; C<sub>4</sub>O<sub>4</sub><sup>2−</sup> = dianion of squaric acid), has been synthesized and structurally characterized by single-crystal X-ray diffraction method. The coordination environment of Cd(II) ions in compound 1 is six-coordinate bonded to four oxygen atoms from two μ<sub>1,3</sub>-squarate (C<sub>4</sub>O<sub>4</sub><sup>2−</sup>) and two water molecules, and two nitrogen atoms from two 2,2’-bpe ligands. The squarate and 2,2’-bpe both act as bridging ligands with <em>bis</em>-monodentate coordination modes, connecting the Cd(II) ions to form a two-dimensional (2D) layered metal-organic framework (MOF). Adjacent 2D layers are then arranged in an ABAB parallel non-interpenetrating manner to construct its three dimensional (3D) supramolecular network. Intra- and inter-layers hydrogen bonding interactions between the C<sub>4</sub>O<sub>4</sub><sup>2−</sup> and water molecules in 1 provide an extra-stabilization energy on the construction of its 3D supramolecular network. The thermal stability of 1 is studied and discussed in details by TG analysis and <em>in-situ</em> PXRD measurement.http://www.aimspress.com/Materials/article/1848/fulltext.htmlcoordination polymermetal-organic frameworkhydrogen bondsquarateCd(II) |
| spellingShingle | Chih-Chieh Wang Yu-Fan Wang Szu-Yu Ke Yanbin Xiu Gene-Hsiang Lee Bo-Hao Chen Yu-Chun Chuang Synthesis, structural characterization and thermal stability of a 2D layered Cd(II) coordination polymer constructed from squarate (C<sub>4</sub>O<sub>4</sub><sup>2</sup><sup>−</sup>) and 2,2’-<em>bis</em>(2-pyridyl)ethylene (2,2’-bpe) ligands AIMS Materials Science coordination polymer metal-organic framework hydrogen bond squarate Cd(II) |
| title | Synthesis, structural characterization and thermal stability of a 2D layered Cd(II) coordination polymer constructed from squarate (C<sub>4</sub>O<sub>4</sub><sup>2</sup><sup>−</sup>) and 2,2’-<em>bis</em>(2-pyridyl)ethylene (2,2’-bpe) ligands |
| title_full | Synthesis, structural characterization and thermal stability of a 2D layered Cd(II) coordination polymer constructed from squarate (C<sub>4</sub>O<sub>4</sub><sup>2</sup><sup>−</sup>) and 2,2’-<em>bis</em>(2-pyridyl)ethylene (2,2’-bpe) ligands |
| title_fullStr | Synthesis, structural characterization and thermal stability of a 2D layered Cd(II) coordination polymer constructed from squarate (C<sub>4</sub>O<sub>4</sub><sup>2</sup><sup>−</sup>) and 2,2’-<em>bis</em>(2-pyridyl)ethylene (2,2’-bpe) ligands |
| title_full_unstemmed | Synthesis, structural characterization and thermal stability of a 2D layered Cd(II) coordination polymer constructed from squarate (C<sub>4</sub>O<sub>4</sub><sup>2</sup><sup>−</sup>) and 2,2’-<em>bis</em>(2-pyridyl)ethylene (2,2’-bpe) ligands |
| title_short | Synthesis, structural characterization and thermal stability of a 2D layered Cd(II) coordination polymer constructed from squarate (C<sub>4</sub>O<sub>4</sub><sup>2</sup><sup>−</sup>) and 2,2’-<em>bis</em>(2-pyridyl)ethylene (2,2’-bpe) ligands |
| title_sort | synthesis structural characterization and thermal stability of a 2d layered cd ii coordination polymer constructed from squarate c sub 4 sub o sub 4 sub sup 2 sup sup sup and 2 2 em bis em 2 pyridyl ethylene 2 2 bpe ligands |
| topic | coordination polymer metal-organic framework hydrogen bond squarate Cd(II) |
| url | http://www.aimspress.com/Materials/article/1848/fulltext.html |
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