含钒多金属氧酸盐的抑菌活性

按文献方法合成了α-Na₁₀[PW₉V₃(H₂O)₃O₃₇]·16H₂O、α-Na10[PW11V(H₂O)O₃₇]·16H₂O和[H₃O]₃[NH₄]₁₈[Mo₅₇V₆O₁₈₃(NO)₆(H₂O)₄₈]·56H₂O（分别简称α-PW₉V₃、α-PW₁₁V和Mo₅₇V₆）含V多金属氧酸盐。 采用纸片法分别测试了它们对大肠杆菌、枯草芽孢杆菌、酵母菌和黑曲霉菌的抑菌活性。 3种化合物均有不同程度的抑菌作用, 其中α-PW₁₁V的抑菌效果最好。     

A facile synthesis of 2,4,6-trichloroborazine from boron trichloride-dimethylsulfide complex and ammonium chloride

<正>2,4,6-Trichloroborazine has been recognized as a desirable monomer for the preparation of high-performance boron nitride fibers through polymer derived ceramics route.So a high yield and facile synthesis of 2,4,6-trichloroborazine is essential in practice. Using boron trichloride-dimethylsulfide complex((CH_3)_2S·BCl_3) and ammonium chloride(NH_4Cl) as starting materials and toluene(C_6H_5CH_3) as solvent,the synthesis of 2,4,6-trichloroborazine to give high yield is reported.     

香豆素/Betti碱主体合成及其对铷、钡离子的选择性响应(英文)

合成了一个新型香豆素/Betti碱主体化合物1,并对其进行了结构表征。在乙腈/水溶液中进行主体1和碱金属、碱土金属相关离子(Li+,Na+,K+,Rb+,Cs+,Be2+,Mg2+,Ca2+,Sr2+,Ba2+)的相互作用研究时,发现仅Rb+,Ba2+离子对主体1有敏感的紫外光谱及荧光光谱响应,而其它的碱金属、碱土金属离子无敏感性光响应。紫外光谱显示,Rb+,Ba2+离子使主体1产生明显的红移(ε=4.66×102L·(mol·cm)-1,Δ=91nm),肉眼可观察到明显的由浅黄向橙红色的颜色变化,并使主体1的荧光光谱发生一定程度的猝灭。     

氮化铝粉体制备工艺研究

以氢氧化铝为铝源,乙炔黑为碳源,采用碳热还原和铝粉直接氮化同时进行,并辅以微波加热的新工艺制备了氮化铝粉体。结果表明,采用该工艺在反应温度为1300℃、反应时间为1h的条件下能获得氮化率高且分散性能良好的氮化铝粉末,该工艺反应活化能仅为常规碳热还原法所需活化能的1/4。     

Synthese,Kristallstruktur und Eigenschaften von Vanadium(II)‐tetrachloroaluminat

Synthesis, Crystal Structure, and Properties of Vanadium(II) Tetrachloroaluminate The reaction of vanadium dichloride and aluminium trichloride yields vanadium(II) tetrachloroaluminate. Amber cuboid crystals can be obtained by slow cooling of the melt. V(AlCl₄)₂ crystallizes in the monoclinic space group I2/c (a = 1284.6(3), b = 776.3(2), c = 1163.5(2) pm, β = 92.376(10)°) and is therefore isotypic to Co(AlCl₄)₂. The structure contains chains build of VCl₆ octahedra and AlCl₄ tetrahedra sharing corners and edges with each other. The temperature dependence of the magnetic susceptibility follows Curie‐Weiss behaviour (μ = 3.88(2) μ_B, Θ = ?9(1) K) complying with the spin‐only paramagnetism expected of d³ ions.     

The formation of self-assembled monolayers of thiophthalocyanine complexes of titanium, vanadium and manganese and their use in l-cysteine electrocatalysis

Self-assembled monolayers (SAMs) based on octapentylthiophthalocyanine complexes of oxovanadium (IV) (OVOPThPc), titanium(IV) (OTiOPThPc), and manganese (III) acetate (AcMnOPThPc), and of tetraphenylthiophthalocyanine complexes of hydroxo manganese(III) (OHMnTPPc) and oxotitanium(IV) (OTiTPPc) are described. The oxidation of l-cysteine was observed at potentials which ranged from 0.52 V to 0.67 V. The detection limits for l-cysteine analysis were of the order of 10^− 7 to 10^− 6 M.