Einsteinium fluoride is a binary inorganic chemical compound of einsteinium and

fluorine Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. As the most electronegative reactive element, it is extremely reacti ...

with the chemical formula .

Synthesis

Einsteinium fluoride can be precipitated from einsteinium(III) chloride solutions upon reaction with

fluoride Fluoride (). According to this source, is a possible pronunciation in British English. is an inorganic, monatomic anion of fluorine, with the chemical formula (also written ), whose salts are typically white or colorless. Fluoride salts typ ...

ions. An alternative preparation procedure is to expose einsteinium(III) oxide to chlorine trifluoride (ClF₃) or F₂ gas at a pressure of 1–2 atmospheres and a temperature between 300 and 400 °C. The EsF₃ crystal structure is hexagonal, as in californium(III) fluoride (CfF₃) where the Es³⁺ ions are 8-fold coordinated by fluorine ions in a bicapped trigonal prism arrangement.

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Physical properties

The compound forms crystals and is insoluble in water.

Chemical properties

The compound is reduced by metallic lithium: ::

References

{{Actinide halides Einsteinium compounds Fluorides Actinide halides