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氟化铝

氟化铝
别名 氟化铝(III)
三氟化铝
识别
CAS号 7784-18-1  checkY
32287-65-3(一水)  checkY
15098-87-0(三水)  checkY
PubChem 2124
ChemSpider 2039
SMILES
 
  • F[Al](F)F
InChI
 
  • 1/Al.3FH/h;3*1H/q+3;;;/p-3
InChIKey KLZUFWVZNOTSEM-DFZHHIFOAC
ChEBI 49464
RTECS BD0725000
性质
化学式 AlF3
摩尔质量 83.977 g·mol⁻¹
外观 白色结晶状固体
密度 2.91 g/cm3
熔点 1290 °C
溶解性 不溶
危险性
欧盟分类 未列明
NFPA 704
0
3
0
 
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

氟化铝是一种无机化合物化学式AlF3。它可以通过氢氧化铝金属铝和氟化氢反应制备。固体结构三氧化铼(ReO3)相似,由扭曲的六氟化铝(AlF6正八面体组成。

的其他卤化物不同,AlF3是难熔的[1]AlCl3AlBr3AlI3液态气态下是二聚体。在大约1000°C时,气态氟化铝为平面三角形构型,具有D3h对称群。Al-F键长163pm

摄氏一千度的气态氟化铝 摄氏一千度的气态氟化铝

氟化铝能增加电解质导电性,以及降低氧化铝熔点,所以在电解铝的生产中是重要的添加剂

参考资料

  1. ^ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
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氟化铝
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