Actinium_trifluoride

Actinium(III) fluoride

Actinium(III) fluoride

Chemical compound

Actinium(III) fluoride (AcF3) is an inorganic compound, a salt of actinium and fluorine.

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Synthesis

Actinium fluoride can be prepared in solution or by a solid-state reaction. In the first method, actinium hydroxide is treated with hydrofluoric acid and the product precipitates:[3]

In the solid-state reaction, actinium metal is treated with hydrogen fluoride gas at 700 °C in a platinum crucible.[4][5]

Properties

Actinium fluoride is a white solid that reacts with ammonia at 900–1000 °C to yield an actinium oxyfluoride:

While lanthanum oxyfluoride is easily formed by heating lanthanum fluoride in air, a similar treatment merely melts actinium fluoride and does not yield AcOF.[4][5]

References

  1. [1]
    Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.44. ISBN 1-4398-5511-0.
  2. [2]
    Zachariasen, W. H. (1949). "Crystal chemical studies of the 5f-series of elements. XII. New compounds representing known structure types". Acta Crystallographica. 2 (6): 388–390. Bibcode:1949AcCry...2..388Z. doi:10.1107/S0365110X49001016.
  3. [3]
    Haire, Richard G. (2006). "Actinium". In Morss; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. p. 36. ISBN 1-4020-3555-1.
  4. [4]
    Fried, Sherman; Hagemann, French; Zachariasen, W. H. (1950). "The Preparation and Identification of Some Pure Actinium Compounds". Journal of the American Chemical Society. 72 (2): 771. doi:10.1021/ja01158a034.
  5. [5]
    Meyer, Gerd and Morss, Lester R. (1991) Synthesis of lanthanide and actinide compounds. Springer. ISBN 0-7923-1018-7. pp. 87–88
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