Conditions were determined in which basic bismuth oxalate of composition BiC₂O₄(OH) can be obtained by direct precipitation upon addition of oxalic acid from nitrate solutions used in production of bismuth compounds. The composition of the compound was confirmed by X-ray phase and chemical analyses, IR and Raman spectroscopy, and thermogravimetry. Electron microscopy was used to examine the effect of the composition of the reaction medium and temperature on the morphology of the product being obtained. It was shown that β-Bi₂O₃ can be obtained in oxidative thermolysis of basic bismuth oxalate, depending on its morphology.

中文翻译：

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硝酸盐溶液沉淀法合成草酸铋（III）

确定了条件，其中通过从用于制备铋化合物的硝酸盐溶液中添加草酸而直接沉淀，可以组成BiC ₂ O ₄（OH）的碱性草酸铋。通过X射线相和化学分析，IR和拉曼光谱以及热重分析法确认化合物的组成。用电子显微镜检查反应介质的组成和温度对所得产物形态的影响。结果表明，β-Bi系₂ ö ₃可以在基本草酸铋的氧化热分解来获得，这取决于其形态。