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Curium(III) fluoride
Chemical compound From Wikipedia, the free encyclopedia
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Curium(III) fluoride or curium trifluoride is the chemical compound composed of curium and fluorine with the formula CmF3.[3] It is a white, nearly insoluble salt that has the same crystal structure as LaF3. It precipitates as a hydrate when fluoride ions are added to a weakly acidic Cm(III) solution; alternatively it can be synthesized by reacting hydrofluoric acid with Cm(OH)3. The anhydrous form is then obtained by desiccation or by treatment with hydrogen fluoride gas.[1]
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Preparation
Curium fluoride can be prepared by in the reaction of curium with fluorine ions in an aqueous solution under weakly acidic conditions:
- Cm3+ (aq) + 3 F− (aq) → CmF3 (s) ↓
Another possible preparation is the reaction of curium hydroxide with hydrofluoric acid, which also produces a hydrate of Curium fluoride.[4]
References
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