A Cd(II) Coordination Polymer Based on Mixed Ligands: Synthesis, Crystal Structure, and Properties
College of Chemistry and Chemical Engineering, Fuyang Normal University, Fuyang 236041, China
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Crystals 2019, 9(12), 625; https://doi.org/10.3390/cryst9120625
Received: 11 November 2019 / Revised: 24 November 2019 / Accepted: 25 November 2019 / Published: 27 November 2019
A new coordination polymer, namely, [Cd(L)(frda)(H2O)]·0.5L·H2O (1) was synthesized by hydrothermal reaction based on mixed multi-N donor 1-(4-(1H-imidazol-5-yl) phenyl)-1H-1,2,4-triazole (L) and O-donor 2,5-furandicarboxylic acid ligands (H2frda) with CdCl2·2.5H2O. Compound 1 was characterized by single-crystal x-ray diffraction, elemental analysis, and IR spectroscopy. In 1, both the multi-N donor and O-donor frda2− ligands act as linear two-connectors to bridge Cd(II) atoms, forming a two-dimensional (2D) layer. Interestingly, the parallel 2D layers stack in an AAA···mode, and the infinite one-dimensional (1D) channels formed along the a-axis direction, where the uncoordinated L molecules were embedded in the void. Furthermore, the weak interactions including the rich hydrogen bonding and π−π stacking interactions progress the 2D structure into a three-dimensional (3D) supramolecular polymer. Diffuse reflectance spectra and the luminescent property were also investigated.
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Keywords:
coordination polymer; characterization; optical property
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MDPI and ACS Style
Han, S.-S.; He, Z.-W.; Li, L.; Chen, S.-S. A Cd(II) Coordination Polymer Based on Mixed Ligands: Synthesis, Crystal Structure, and Properties. Crystals 2019, 9, 625.
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