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二硫化鍺

二硫化鍺
系统名
硫化鍺(IV)[1]
英文名 Germanium disulfide
识别
CAS号 12025-34-2  checkY
PubChem 82816
ChemSpider 74732
SMILES
 
  • S=[Ge]=S
InChI
 
  • 1/GeS2/c2-1-3
InChIKey YIZVROFXIVWAAZ-UHFFFAOYAU
EINECS 234-705-1
性质
化学式 GeS2
摩尔质量 136.77 g·mol−1
外观 白色半透明晶體
密度 2.94 g cm-3
熔点 800 °C(1073 K)
溶解性 稍溶于水
结构
晶体结构 單斜mP36
空间群 Pc,7號
配位几何 鍺處為四面體,硫處為彎曲
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

二硫化鍺,又稱硫化鍺(IV),是一種無機化合物,化學式為GeS2。它是一種高熔點的結晶固體[1][2] 。這種化合物是一種三維聚合物,與一維聚合物的二硫化硅不同。鍺與硫原子在二硫化鍺中的距離為2.19 Å[3]

歷史

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在分析硫銀鍺礦的過程中,克萊門斯·溫克勒所發現的第一種化合物就是二硫化鍺。由於二硫化鍺不溶於酸的水溶液,因此溫克勒得以把新元素分離出來[4]

化学性质

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二硫化锗遇水缓慢水解,并放出硫化氢。它在液氨中可以和金属反应:[5]

GeS2 + 4 Na → 2 Na2S + Ge
GeS2 + 8 Na → 2 Na2S + Na4Ge

參考資料

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  1. ^ 1.0 1.1 Johnson, O. H. Germanium and its Inorganic Compounds. Chemical Reviews. 1952, 51 (3): 431–469. doi:10.1021/cr60160a002. 
  2. ^ Golubkov, A. V.; Dubrovskii, G. B.; Shelykh, A. I. Preparation and properties of GeS2 single crystals. Semiconductors. 1998, 32 (7): 734–735. doi:10.1134/1.1187494. 
  3. ^ Zachariasen, W. H. The Crystal Structure of Germanium Disulphide. Journal of Chemical Physics. 1936, 4 (9): 618. doi:10.1063/1.1749915. 
  4. ^ Winkler, C. Mittheilungen über das Germanium. Journal für Praktische Chemie. 1886, 34 (1): 177–229 [2012-12-05]. doi:10.1002/prac.18860340122. (原始内容存档于2012-11-03). 页面存档备份,存于互联网档案馆
  5. ^ 无机化学丛书 第三卷 碳 硅 锗分族. 科学出版社. pp 363-365. 1. 二硫化锗(GeS2
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二硫化鍺
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