Английская Википедия:Actinium(III) fluoride
Actinium(III) fluoride (AcF3) is an inorganic compound, a salt of actinium and fluorine.
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:[1]
- <chem>Ac(OH)3 + 3HF -> AcF_3(v) + 3H2O</chem>
In the solid-state reaction, actinium metal is treated with hydrogen fluoride gas at 700 °C in a platinum crucible.[2][3]
Properties
Actinium fluoride is a white solid that reacts with ammonia at 900–1000 °C to yield an actinium oxyfluoride:
- <chem>AcF3 + 2NH3 + H2O -> AcOF + 2NH4F</chem>
While lanthanum oxyfluoride is easily formed by heating lanthanum fluoride in air, a similar treatment merely melts actinium fluoride and does not yield AcOF.[2][3]
References
Шаблон:Actinium compounds Шаблон:Fluorides Шаблон:Actinide halides Шаблон:Authority control
- ↑ Шаблон:Cite book
- ↑ 2,0 2,1 Шаблон:Cite journal
- ↑ 3,0 3,1 Meyer, Gerd and Morss, Lester R. (1991) Synthesis of lanthanide and actinide compounds. Springer. Шаблон:ISBN. pp. 87–88