Syntheses, structures, and magnetism of new vanadium and iron fluoride phosphates Ax(NH4)3-xM4(PO4)2F7(OH)2 (A=K, Rb, Cs, and M= V, Fe) containing novel structural motifs

Three novel alkali metal fluoroaluminophosphates, Li 3 [AlP 2 O 7 F(OH)](H 2 O) 0.5 and A[Al 2 (PO 4 ) 2 F(H 2 O)](A = K, Rb), were designed and synthesized by using low-temperature flux methods. They crystallized in polar space groups P 4 and P2 1 2 1 2 1 , respectively. Li 3 [AlP 2 O 7 F-(OH)](H 2 O) 0.5 features a unique two-dimensional layered structure of fluoroaluminophosphate [AlP 2 O 7 F(OH)] 3− n , composed of alternately connected AlFO 5 octahedra and PO 4 tetrahedra. In contrast, with counter cations from Li + to K + /Rb + , two new crystals of A[Al 2 (PO 4 ) 2 F(H 2 O)](A = K, Rb) have been obtained. They possess a distinct three-dimensional anionic framework, [Al 2 (PO 4 ) 2 F] − n , consisting of corner-sharing AlO 5 triangular bipyramids, AlFO 5 octahedra, and PO 4 tetrahedra, revealing intersecting open tunnels along the [010], [001], and [111] directions. Notably, both Li 3 [AlP 2 O 7 F(OH)](H 2 O) 0.5 and K[Al 2 (PO 4 ) 2 F(H 2 O)] exhibit moderate second harmonic generation effects. Besides, porous material of K[Al 2 (PO 4 ) 2 F(H 2 O)] 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.

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Syntheses, structures, and magnetism of new vanadium and iron fluoride phosphates Ax(NH4)3-xM4(PO4)2F7(OH)2 (A=K, Rb, Cs, and M= V, Fe) containing novel structural motifs

Cited by 2 publications

References 31 publications

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Li₃[AlP₂O₇F(OH)](H₂O)_0.5 and A[Al₂(PO₄)₂F(H₂O)](A = K, Rb): Counter Cation Templates Derived Three Polar Alkaline Metal Fluoroaluminophosphates

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Syntheses, structures, and magnetism of new vanadium and iron fluoride phosphates Ax(NH4)3-xM4(PO4)2F7(OH)2 (A=K, Rb, Cs, and M= V, Fe) containing novel structural motifs

Cited by 2 publications

References 31 publications

Synthesis, crystal structures and magnetism of triclinic hydrogen selenite chlorides ACu(HSeO3)Cl2 (A = Rb, Cs)

Synthesis, crystal structures and magnetism of triclinic hydrogen selenite chlorides ACu(HSeO3)Cl2 (A = Rb, Cs)

Li3[AlP2O7F(OH)](H2O)0.5 and A[Al2(PO4)2F(H2O)](A = K, Rb): Counter Cation Templates Derived Three Polar Alkaline Metal Fluoroaluminophosphates

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Li₃[AlP₂O₇F(OH)](H₂O)_0.5 and A[Al₂(PO₄)₂F(H₂O)](A = K, Rb): Counter Cation Templates Derived Three Polar Alkaline Metal Fluoroaluminophosphates