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
• 来源期刊: 结构化学
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: coordination chemistry
• 页码范围: 615-624
• 页数: 10页
• 语种: 英文
• DOI: 10.14102/j.cnki.0254-5861.2011-2987

摘要

Three lanthanide complexes[LnL3(H2O)]PMo12O40·CH3CN(Ln = Dy3+for 1,Ln = Ho3+for 2,Ln= Lu3+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 P21/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.