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 si...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.展开更多
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)。
文摘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.
