Фторид церия (CeF4)

Description

Cerium fluoride (CeF4) is anhydrous cerium tetrafluoride, a salt of cerium(IV) and hydrofluoric acid. CAS 10060-10-3. Synonyms: Cerium fluoride, Cerium tetrafluoride, Cerium(IV) fluoride.

Basic Attributes

• CAS No.: 10060-10-3
• Chemical formula: CeF4
• Molecular Weight: 216.11
• Exact weight: 215.89900

Substance class

Anhydrous cerium tetrafluoride is an inorganic fluoride of a rare earth metal in the highest oxidation state of cerium. Unlike the hydrated form of CeF4·H2O, the anhydrous compound does not contain water of crystallization, which makes it a more reactive fluorinating and oxidizing reagent.

Scope of application

Cerium tetrafluoride is widely used in scientific research as a fluorinating agent, oxidizing agent and catalyst, and also as a reagent in organic synthesis. It promotes the synthesis of organic compounds, the oxidation of alcohols and the formation of alkenes. The compound acts as a reagent in the synthesis of sodium-rare earth silicate oxyfluoride apatites and in the fluorination of C60 fullerene with fluorides of rare earth metals. Cerium tetrafluoride is used as a catalyst in the Hantzsch reaction, as well as in etching processes that form microporous silicon.

• fluorinating agent, oxidizing agent and catalyst in organic synthesis
• oxidation of alcohols, formation of alkenes
• synthesis of silicate oxyfluoride apatites of rare earth elements
• fluorination of fullerene C60
• Ganch reaction catalyst
• etching to form microporous silicon
• anti-reflective optical coatings
• production of glass and ceramics with increased UV resistance
• dopant for luminescent materials of displays and LEDs
• fluoride ion conductors for solid state batteries
• fluoride glasses for laser materials

Difference from hydrate form

Unlike CeF4·H2O hydrate, which mainly serves as a raw material source of cerium for metallurgy, anhydrous cerium tetrafluoride is an independent reagent in fine organic synthesis and materials science, where its high reactivity as a fluorinating and oxidizing agent is important.

Storage and transportation conditions

Store in an airtight container, in a dry place, away from reducing agents and flammable materials - the compound is a strong oxidizing agent and fluorinating agent, reacts with air moisture.

Receipt

Anhydrous cerium tetrafluoride is obtained by fluorinating cerium dioxide or cerium trifluoride with elemental fluorine or other strong fluorinating agents at elevated temperatures; This route avoids the formation of water of crystallization, which is characteristic of the hydrate form precipitated from aqueous solutions.

Reactivity value

It is the high reactivity that distinguishes anhydrous tetrafluoride from other cerium fluoride compounds: as a medium-strength oxidizing agent and at the same time a source of fluorine, it is capable of transferring a fluorine atom to an organic substrate under mild conditions, without requiring more aggressive and difficult-to-handle reagents such as elemental fluorine.