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Influence of pH on the structures of two Cd phosphonate compounds

文献类型： 外文期刊

作者： Zhao, Ling Yan 1 ; Deng, Xiao Chen 1 ; Liang, Gang 2 ; Zheng, Xi Bao 3 ; Li, Xi Yue 1 ;

作者机构： 1.North China Univ Sci & Technol, Coll Qianan, Qianan 064400, Hebei, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Beijing Municipal Key Lab Agr Environm Monitoring, Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China

3.Qianan Sinochem Chem Co Ltd, Qianan 064400, Hebei, Peoples R China

关键词： Cd-based coordination polymers; Solution pH value; Photo-luminescent; FTIR

期刊名称：JOURNAL OF CHEMICAL SCIENCES （ 影响因子：1.573； 五年影响因子：1.517 ）

ISSN： 0974-3626

年卷期： 2020 年 132 卷 1 期

页码：

收录情况： SCI

摘要： Two novel Cd-based coordination polymers Cd(H2BCP)(2)(phen)(2)1 and {[Cd-6(BCP)(4)(phen)(3)]center dot 2H(2)O}(n)2 (Phen=1,10-phenanthroline) have been hydrothermally synthesized from a combination of 4-(phosphonomethyl) benzoic acid 4-HOOCC6H4CH2PO3H2 (H3BCP) and 1,10-phenanthroline. The X-ray crystal structure analyses revealed that 1 is a 0D mononuclear molecular structure and 2 is a 3D structure existing the novel Cd-6 cluster unit. It is worth mentioning that 1 and 2 have the same constitutional units, namely the Cd ion, H3BCP ligand and second ligand- Phen. However, their structures are different and it results from the different solution pH value. In order to explore the structural characteristics, FTIR, photo-luminescent and solid UV-Vis spectra are employed. Graphic abstract Synthesis and properties of two novel Cd-based coordination polymers Cd(H2BCP)(2)(phen)(2)1 and {[Cd-6(BCP)(4)(phen)(3)]center dot 2H(2)O}(n)2 are reported. It is worth mentioning that 1 is zero-dimensional structure and forms super-molecular layers via O-H center dot center dot center dot O under the condition of solution pH = 2.1, 2 is a three-dimensional framework and contains the novel Cd-6 cluster unit under the condition of solution pH = 5. So controlling the pH of the solution plays an important role in the structure of the compound.

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