A new phosphotungstate was synthesized by solution-phase synthesis and characterized by Fourier transform infrared spectra analysis and diffuse reflectance spectra analysis.Its primary antibacterial activity was studied.The experimental results show that phosphotungstic acid and chitooligosaccharide come into being a new salt by electrostatic attraction.The phosphotungstate has an excellent antibacterial activity to Escherichia coli,Microzyme,Aspergillus expect Staphylococcus aureus.The antibacterial mechanism was presumed.As a potential antiseptic matter,the phosphotungstate may have an extensive applied foreground.
A supermolecular compound, {8-hydroxyquinolineH44+·SiW12O404-·2H2O} was synthesized by hydrothermal reaction with silico-tungstic acid and 8-hydroxyquinoline. The crystal of the compound belongs to monoclinic system, space group P21/n, with a=1.282 6(6) nm, b=2.292 7(4) nm, c=2.092 0(6) nm, β=95.495(2)°, Z=4, V=6.124 1(7) nm3, Dc=3.791 g·cm-3, μ=22.568 mm-1, F(000)=6 200, R1=0.029 3, wR2=0.069 3, GOF=1.079. Su-permolecular compound is composed of one SiW12O404- with Keggin structure, four protonated cations of 8-hydroxyquinoline, two hydrones. Thermal analysis results showed that the anionic skeleton construction of heteropoly acid in compound decomposed approximately at 349.0 ℃. CCDC: 622142.
