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为研究有机基团对有机胂合钼聚多酸盐类型的影响,试验了3-硝基-4-羟基苯胂酸与钼酸钠在pH为3～5条件下的反应。制得了两种新化合物:(1)(NH_4)_6[(3-NO_2-4-OHC_6H_3As)_2Mo_6O_(25)](2)(CN_3H_6)_6[(3-NO_2-4-OHC_6H_3As)_2Mo_6O_(25)]。报道和讨论了它们的红外、可见与紫外光谱、热分解性质和电化学氧化还原性质。它们与其钨同系物类型相同。化合物(1)可用酸化聚合法及解聚法制得,经过实验比较证实了以七钼酸铵为原料的解聚法具有产物纯化方便、得率高的优点。
In order to study the effect of organic groups on the type of organoarsenic molybdenum polyoxalate, the reaction of 3-nitro-4-hydroxyphenylarsonic acid with sodium molybdate at pH 3-5 was tested. Two novel compounds were prepared: (1) (NH_4) _6 [(3-NO_2-4-OHC_6H_3As) _2Mo_6O_ (25)] (2) (CN_3H_6) _6 [(3-NO_2-4-OHC_6H_3As) _2Mo_6O_ (25) ]. Their infrared, visible and UV spectra, thermal decomposition and electrochemical redox properties have been reported and discussed. They are the same type of tungsten homologue. Compound (1) can be prepared by acidification polymerization and depolymerization. Experiments show that the depolymerization method using ammonium heptamolybdate as raw material has the advantages of convenient purification and high yield.