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首页> 外文期刊>Crystal growth & design >2-propyl-4,5-dicarboxylate-imidazole (H_3PIDC) based cadmium(II) coordination compounds stabilized by supramolecular interactions: From mononuclear and tetranuclear oligomers to one-dimensional (1D) Chain and two-dimensional (2D) layer polymers
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2-propyl-4,5-dicarboxylate-imidazole (H_3PIDC) based cadmium(II) coordination compounds stabilized by supramolecular interactions: From mononuclear and tetranuclear oligomers to one-dimensional (1D) Chain and two-dimensional (2D) layer polymers

机译：通过超分子相互作用稳定的基于2-丙基-4,5-二羧酸-咪唑（H_3PIDC）的镉（II）配位化合物：从单核和四核低聚物到一维（1D）链和二维（2D）层聚合物

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摘要

Six cadmium(II) coordination compounds with 2-propyl-imidazole-4,5- dicarboxylate (H_3PIDC), including two mononuclear complexes, [Cd(H_2PIDC)_2(H_2O)_2]·4H_2O (1) and [Cd_2(H_2PIDC) _4(H_2O)_4]·7H_2O (2), two square tetranuclear complexes, [Cd_4(HPIDC)_4(H_2O)_8]·2H_2O (3) and [Cd_4(HPIDC)_4(py)_8]·10H_2O (py = pyridine, 4), one one-dimensional chain polymer, [Cd_2(H_2PIDC)_4(H_2O)_2]_n·2nH_2O (5), as well as one two-dimensional layer polymer, [Cd(H_2PIDC)_2]_n (6), have been prepared using solvent evaporation method and hydrothermal method. The results of single-crystal X-ray diffraction analyses indicate that, besides the common supramolecular interactions such as hydrogen bond and π?π stacking, the hydrophobic interaction among the propyl groups in the H_3PIDC ligands also contributes to the stabilities of 1-6. The study of substance transformation for 3 reveals that the coordinated H_2O molecules in 3 can be well replaced by pyridine molecules, indirectly leading to the formation of 4. The results of photoluminescent measurements illustrate upon photoexcitation that 3-6 can emit fluorescence in the wavelength range of 451-473 nm in the solid state.
机译：带有2-丙基咪唑-4,5-二羧酸（H_3PIDC）的六个镉（II）配位化合物，包括两个单核络合物[Cd（H_2PIDC）_2（H_2O）_2]·4H_2O（1）和[Cd_2（H_2PIDC） _4（H_2O）_4]·7H_2O（2），两个正方形四核配合物，[Cd_4（HPIDC）_4（H_2O）_8]·2H_2O（3）和[Cd_4（HPIDC）_4（py）_8]·10H_2O（py =吡啶4），一维链状聚合物[Cd_2（H_2PIDC）_4（H_2O）_2] _n·2nH_2O（5）以及一种二维层状聚合物[Cd（H_2PIDC）_2] _n（6 ），已使用溶剂蒸发法和水热法制备。单晶X射线衍射分析的结果表明，除了常见的超分子相互作用如氢键和πππ堆积之外，H_3PIDC配体中的丙基之间的疏水相互作用也有助于1-6的稳定性。对3的物质转化的研究表明，3中的配位H_2O分子可以被吡啶分子很好地替代，从而间接导致4的形成。光致发光测量结果表明，在光激发下3-6可以在波长范围内发出荧光在固态时为451-473nm。

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