<p>Two three-dimensional (3D) Cd-based metal-organic frameworks (MOFs), [Cd(<b>L1</b>)(<b>L2</b>)]·(CH<sub>4</sub>O)<sub>16</sub> (<b>Cd-1</b>) and [Cd(<b>L1</b>)(<b>L3</b>)]·(C<sub>3</sub>H<sub>7</sub>NO)<sub>1.5</sub>(CH<sub>4</sub>O)<sub>5</sub> (<b>Cd-2</b>), have been rationally designed and synthesized by using 10,10’-bis((<i>E</i>)-2-(pyridin-4-yl)vinyl)-9,9’-bianthracene (<b>L1</b>), 1,4-benzenedicarboxylic acid (H<sub>2</sub><b>L2</b>) or 4,4’-biphenyldicarboxylic acid co-ligand (H<sub>2</sub><b>L3</b>) and CdCl<sub>2</sub>·4H<sub>2</sub>O under solvothermal conditions. The structures have been determined by single-crystal X-ray diffraction analyses and further characterized by IR spectra, UV-Vis spectra, and powder X-ray diffraction (PXRD). Single-crystal X-ray diffraction analyses reveal that <b>Cd-1</b> consists of a 3D network with one-dimensional (1D) channels, while <b>Cd-2</b> with longer dicarboxylate ligands consists of a 3D network with interpenetration of two infinite structures. Moreover, the two MOFs exhibit strong luminescent emission in solid state at room temperature. The stability of <b>Cd-1</b> and <b>Cd-2</b> at different temperatures was analyzed by thermogravimetry.</p>

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Synthesis, structures and properties of two 3D Cd(II) MOFs with bianthracene vinylpyridine and dicarboxylate ligands

  • Hua-Tian Shi,
  • Weibin Yu,
  • Ai-Quan Jia,
  • Xianwen Wei

摘要

Two three-dimensional (3D) Cd-based metal-organic frameworks (MOFs), [Cd(L1)(L2)]·(CH4O)16 (Cd-1) and [Cd(L1)(L3)]·(C3H7NO)1.5(CH4O)5 (Cd-2), have been rationally designed and synthesized by using 10,10’-bis((E)-2-(pyridin-4-yl)vinyl)-9,9’-bianthracene (L1), 1,4-benzenedicarboxylic acid (H2L2) or 4,4’-biphenyldicarboxylic acid co-ligand (H2L3) and CdCl2·4H2O under solvothermal conditions. The structures have been determined by single-crystal X-ray diffraction analyses and further characterized by IR spectra, UV-Vis spectra, and powder X-ray diffraction (PXRD). Single-crystal X-ray diffraction analyses reveal that Cd-1 consists of a 3D network with one-dimensional (1D) channels, while Cd-2 with longer dicarboxylate ligands consists of a 3D network with interpenetration of two infinite structures. Moreover, the two MOFs exhibit strong luminescent emission in solid state at room temperature. The stability of Cd-1 and Cd-2 at different temperatures was analyzed by thermogravimetry.