Crystal Structures, Terahertz Spectra and Dye Adsorption Performance of Three Lanthanide-bisphosphonate Complexes Containing Keggin Polyoxometalates  

作　　者：WANG Zhi-Qiang PAN Xun LU Yan-Lei LI Ying-Yu YANG Yu-Ping XIN Xiu-Lan JIN Qiong-Hua 王志强;潘迅;卢延磊;李樱雨;杨玉平;辛秀兰;金琼花(Department of Chemistry,Capital Normal University,Beijing 100048,China;State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;School of Science,Minzu University of China,Beijing 100081,China)

机构地区：[1]Department of Chemistry,Capital Normal University,Beijing 100048,China [2]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China [3]School of Science,Minzu University of China,Beijing 100081,China

出　　处：《Chinese Journal of Structural Chemistry》2021年第5期615-624,529,共11页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.21171119 and 11574408);the Beijing Municipal Natural Science Foundation(Nos.2172017 and 2172012)。

摘　　要：Three lanthanide complexes [LnL_(3)(H_(2)O)]PMo_(12)O_(40)·CH_(3)CN(Ln = Dy^(3+) for 1, Ln = Ho^(3+) for 2, Ln = Lu^(3+) for 3, L = tetraethyl ethylenediphosphonate) have been synthesized, and characterized by single-crystal X-ray diffraction, elemental analysis, IR, PXRD, thermogravimetric analysis and terahertz time-domain spectroscopy(THz-TDS). Structural analysis results show that they have the same coordination mode and similar steric structures. Complexes 1~3 all crystallize in the monoclinic crystal system with space group P2_(1/c). The centered Ln(Ⅲ) obtained a seven-coordinated mononuclear structure by linking with three tetraethyl ethylenediphosphonates and one water molecule, resulting in a three-dimensional supramolecular structure through hydrogen bonding. The three complexes have good adsorption properties for rhodamine B(RhB) in powder state. Moreover, terahertz time-domain spectroscopy(THz-TDS) was applied to represent the structures of complexes and ligands, which will provide useful information for establishing bridge between THz and complex structure in coordination chemistry.

关 键 词：lanthanide complexes POMS tetraethyl ethylenediphosphonate structure terahertz time-domain spectroscopy(THz-TDS) 

分 类 号：O641.4[理学—物理化学]