Study On Molybdenum, Copper, Arsenic Polyoxometalates Supramolecular Synthesis, Crystal Structure And Properties

The article reports that three new supramolecular complexes: [Mo(â…£)Mo₂(â…¤)O₇](Phen),Cu₄(phen)₂As₆O₁₆(H₂O)₁₄ and (C₅H₇N₂)₃AsMo₁₂O₄₀.5H₂O and one supramolecular complexe:Cu(phen)₂Mo₄O₁₃ that only reported crystal structure but not characterized crystal structure.These complexes were characterized by IR spectra,thermogravimetric analysis(TGA),and single-crystal X-ray diffraction.The photofluorescence properties or magnetic properties have been studied.Two supramolecular complexes:Cu(phen)₂Mo₄O₁₃ and [Mo(â…£)Mo₂(â…¤)O₇](Phen),have been synthesized by hydrothermal reaction with 1,10-phenanthroline,copper bromide and sodium molybdate.Complex Cu(phen)₂Mo₄O₁₃ crystallizes in a triclinic space group P(?),with the cell parameters of a=10.4973(5)(?),b=12.0938(6)(?),c=21.9680(11)(?)β=97.96(0), V=2762.04(45)(?)³,Z=4.R1=0.0263,WR1=0.0662.Complex Cu(phen)₂Mo₄O₁₃ crystallizes in a triclinic space group P(?),with the cell parameters of:a=7.8656(3)(?), b=21.1320(7)(?),c=9.4593(4)(?),β=112.89(0),V=1448.51(123)(?)³,a/b=0.3722 b/c=2.2340 c/a=1.2026 Z=7.Complex Cu(phen)₂Mo₄O₁₃and Complex [Mo(â…£)Mo₂(â…¤)O₇](Phen)are all linked into three-dimensional supramolecular structure by p-p stacking interaction.Complex Cu(phen)₂Mo₄O₁₃ and Complex [Mo(â…£)Mo₂(â…¤)O₇](Phen) possesses very high thermal stability.Fluorescence analysis showed that the complex Cu(phen)₂Mo₄O₁₃ has a weak emission peak at 289nm and a strong emission peak at 398nm when excited at 280nm; complexe[Mo(â…£)Mo₂(â…¤)O₇](Phen) has a 397nm emission peak when excited at 250nm.A new supramolecular complexes:Cu₄(phen)₂As₆O₁₆(H₂O)₁₄ has been synthesized by hydrothermal reaction with three sodium arsenate,copper sulfate pentahydrate and 1,10-phenanthroline.The complex crystallizes in a triclinic space group P-1,with the cell parameters of a=8.5794(9)(?),b=10.0961(9)(?), c=12.6883(12)(?),a=86.243(2)°,β=83.642.(2),=67.7510(10),V=1010.63(17)(?), Z=1,R1=0.0578,WR1=0.1034,R2=0.0337,WR2=0.0996.The complex is linked into three-dimensional supramolecular structure by p-p stacking interaction.The complex has an emission apex at 398nm in the solid when excited at 320nm at room temperature.The complex possesses very high thermal.stability.A new supramolecular complexes:(C₅H₇N₂)₃AsMo₁₂O₄₀.5H₂O has been synthesized with diarsenic pentoxide,sodium molybdate and 2-aminopyridine.The complex crystallizes in a triclinic space group,with the cell parameters of: a=13.153(3)(?),b=22.072(4)(?),c=21.758(4)(?),β= 16.25(1),V=5665.07(3080)(?)³, a/b=0.5959,b/c=1.0144,c/a=1.1.6542,Z=4,R1=0.2814,WR1=0.3951,R2=0.0823 WR2=0.0258.The complex is linked into three-dimensional supramolecular structure by N-H…N and N-H…O hydrogen bonds.The Complex possesses high thermal stability.The complexe has very a good photocatalytic effect for eliminating methanol and acetone.