Английская Википедия:Europium(II) fluoride

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Шаблон:Chembox Europium(II) fluoride is an inorganic compound with a chemical formula EuF2. It was first synthesized in 1937.[1]

Production

Europium(II) fluoride can be produced by reducing europium(III) fluoride with metallic europium or hydrogen gas.[2]

<math>\mathrm{2 \ EuF_3 + Eu \longrightarrow 3 \ EuF_2}</math>
<math>\mathrm{2 \ EuF_3 + H_2 \longrightarrow 2 \ EuF_2 + 2 \ HF}</math>

Properties

Europium(II) fluoride is a bright yellowish solid with a fluorite structure.[2]

EuF2 can be used to dope a trivalent rare-earth fluoride, such as LaF3, to create a vacancy-filled structure with increased conductivity over a pure crystal. Such a crystal can be used as a fluoride-specific semipermeable membrane in a fluoride selective electrode to detect trace quantities of fluoride.[3][4]

References

Шаблон:Reflist

Шаблон:Europium compounds Шаблон:Fluorides Шаблон:Lanthanide halides

  1. Zhao Yongzhi, Ma Ying, Hou Shaochun, Zhang Wenjuan, Wang Jingjing, Ding Yanrong, Hao Yifan. 氟化亚铕研究现状 (lit. Research Progress of Europium(II) Fluoride). Chinese Rare Earths, 2017. 38 (5): 134-140. (in Chinese)
  2. 2,0 2,1 Georg Brauer: Handbuch der Präparativen Anorganischen Chemie. 3., umgearb. Auflage. Band I. Enke, Stuttgart 1975, Шаблон:ISBN, S. 255.
  3. Шаблон:Cite journal
  4. Шаблон:Cite journal