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蛋炒飯+水銅蟲 (小有名氣)
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[求助]
誰配過堿式醋酸鋅
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| 求配制堿式醋酸鋅的方法?自己20%的醋酸鋅75ml+1mol/l氫氧化鈉475ml,怎么做不產(chǎn)生沉淀,我?guī)熜终f氫氧化鈉通氮氣,加醋酸鋅慢慢溶解,求鑒定,自己準備試試。 |
銀蟲 (小有名氣)
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According to the method described by Auger and Robins) the compound was prepared by slowly distilling powdered anhydrous zinc acetate in a high vacuum. Zinc oxyacetate sublimed gradually and was collected as a crystalline crust on the cool place of the container. After being allowed to cool, the crystalline crust was examined and well-formed single crystals were picked out. They form small (up to 0.8 mm) transparent octahedra, which on prolonged exposure to moist air are hydrolysed and become opaque, while the corresponding beryllium compound is extremely stable. Crystals selected for the present study were octahedra of about 0.6 mm in each dimension and showed no remarkable cleavage. 大意: 根據(jù)Auger和Robins描述的方法,通過在高真空中緩慢蒸餾粉末狀無水乙酸鋅來制備化合物。 逐漸升華的氧乙酸鋅在容器的陰涼處收集為結(jié)晶殼。 在冷卻后,檢查結(jié)晶外殼并挑出形成良好的單晶。 它們形成小的(最多0.8毫米)透明八面體,長時間暴露在潮濕空氣中會水解并變得不透明,而相應(yīng)的鈹化合物非常穩(wěn)定。選擇用于本研究晶體在每個維度約0.6mm八面體并且沒有明顯的裂痕。 文獻鏈接: https://www.journal.csj.jp/doi/ref/10.1246/bcsj.27.112 |

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