Li3AlP2O7F(OH)(H2O)0.5 and AAl2(PO4)2F(H2O)(A = K, Rb): Counter Cation Templates Derived Three Polar Alkaline Metal Fluoroaluminophosphates

Three novel alkali metal fluoroaluminophosphates, Li3[AlP2O7F(OH)](H2O)0.5 and A[Al2(PO4)2F(H2O)](A = K, Rb), were designed and synthesized by using low-temperature flux methods. They crystallized in polar space groups P4 and P212121, respectively. Li3[AlP2O7F(OH)](H2O)0.5 features a unique two-dime...

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Veröffentlicht in:Inorganic chemistry 2024-12
Hauptverfasser: Hao, Yucheng, Chen, Changlin, Hou, Cheng, Liu, Shaokai, Peng, Zheng, Lin, Yuan, Li, Haijian, Zhao, Xi, Koirala, Kisan, Lu, Hongdian, Deng, Chonghai, Hu, Kunhong
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Sprache:eng
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Zusammenfassung:Three novel alkali metal fluoroaluminophosphates, Li3[AlP2O7F(OH)](H2O)0.5 and A[Al2(PO4)2F(H2O)](A = K, Rb), were designed and synthesized by using low-temperature flux methods. They crystallized in polar space groups P4 and P212121, respectively. Li3[AlP2O7F(OH)](H2O)0.5 features a unique two-dimensional layered structure of fluoroaluminophosphate [AlP2O7F(OH)]3-n, composed of alternately connected AlFO5 octahedra and PO4 tetrahedra. In contrast, with counter cations from Li+ to K+/Rb+, two new crystals of A[Al2(PO4)2F(H2O)](A = K, Rb) have been obtained. They possess a distinct three-dimensional anionic framework, [Al2(PO4)2F]-n, consisting of corner-sharing AlO5 triangular bipyramids, AlFO5 octahedra, and PO4 tetrahedra, revealing intersecting open tunnels along the [010], [001], and [111] directions. Notably, both Li3[AlP2O7F(OH)](H2O)0.5 and K[Al2(PO4)2F(H2O)] exhibit moderate second harmonic generation effects. Besides, porous material of K[Al2(PO4)2F(H2O)] exhibited remarkable ionic exchange properties with Cs+, implying its potential utility in the remediation of radioactive waste and offering a promising solution for managing nuclear contaminants. This research reports on their syntheses, topological structures, elemental analysis, thermal stability, IR Raman spectroscopy, UV-Vis diffuse reflectance spectroscopy, ion exchange property, and nonlinear optical characteristics.Three novel alkali metal fluoroaluminophosphates, Li3[AlP2O7F(OH)](H2O)0.5 and A[Al2(PO4)2F(H2O)](A = K, Rb), were designed and synthesized by using low-temperature flux methods. They crystallized in polar space groups P4 and P212121, respectively. Li3[AlP2O7F(OH)](H2O)0.5 features a unique two-dimensional layered structure of fluoroaluminophosphate [AlP2O7F(OH)]3-n, composed of alternately connected AlFO5 octahedra and PO4 tetrahedra. In contrast, with counter cations from Li+ to K+/Rb+, two new crystals of A[Al2(PO4)2F(H2O)](A = K, Rb) have been obtained. They possess a distinct three-dimensional anionic framework, [Al2(PO4)2F]-n, consisting of corner-sharing AlO5 triangular bipyramids, AlFO5 octahedra, and PO4 tetrahedra, revealing intersecting open tunnels along the [010], [001], and [111] directions. Notably, both Li3[AlP2O7F(OH)](H2O)0.5 and K[Al2(PO4)2F(H2O)] exhibit moderate second harmonic generation effects. Besides, porous material of K[Al2(PO4)2F(H2O)] exhibited remarkable ionic exchange properties with Cs+, implying its potential utility in the remediation of radio
ISSN:1520-510X
1520-510X
DOI:10.1021/acs.inorgchem.4c04417