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本文详细地研究了具有 Dawson 结构的钼砷杂多酸(H_6As_2Mo_(18)O_(62))的两电子、四电子、六电子还原杂多蓝的制备条件,离析出了它们的钾盐、铵盐及四丁基胺盐.找到了合适的电解电位.通过电位滴定、极谱、电子光谱、红外光谱、X 射线粉末衍射和光电子能谱的研究,确证了所希望得到的产物.研究表明,杂多蓝的结构与还原前相比未发生明显变化.水溶液稳定性的研究指出,杂多蓝要比还原前的杂多阴离子稳定,存在的 pH 范围加宽.指认了可见-红外区出现的谱带.
In this paper, the preparation conditions of two electron, four electron and six electron reduced heteropoly blue of molybdate heteropoly acid (H_6As_2Mo_ (18) O_ (62)) with Dawson structure were studied in detail. Their potassium salts, ammonium Salt and tetrabutylammonium salt. The suitable electrolysis potentials were found. The desired products were confirmed by potentiometric titration, polarographic, electronic, infrared, X-ray powder diffraction and photoelectron spectroscopy. The structure of heteropoly blue did not change significantly compared with that before reduction.Studies on the stability of aqueous solution indicated that heteropoly blue is more stable than the heteropolyanion before reduction and the pH range is widened.It has been confirmed that the visible-infrared region Bands.