Chloryl fluoride
Encyclopedia
Chloryl fluoride is the chemical compound
Chemical compound
A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together...

 with the formula ClO2F. It is commonly encountered side-product in reactions of chlorine fluorides
Chlorine fluorides
A chlorine fluoride is an interhalogen compound containing only chlorine and fluorine.- External links :* * *...

 with oxygen sources. It is the acyl fluoride
Acyl halide
An acyl halide is a chemical compound derived from an oxoacid by replacing a hydroxyl group with a halide group....

 of chloric acid
Chloric acid
Chloric acid, HClO3, is an oxoacid of chlorine, and the formal precursor of chlorate salts. It is a strong acid and oxidizing agent....

.

Preparation

ClO2F was first reported by Schmitz and Schumacheb in 1942, who prepared it by the fluorination of ClO2. The compound is more conveniently prepared by treatment of sodium chlorate and chlorine trifluoride and purified by vacuum fractionation, i.e. selectively condensing this species separately from other products. This species is a gas boiling at -6 C:
6 NaClO3 + 4 ClF3 → 6 ClO2F + 2 Cl2 + 3 O2 + 6 NaF

Structure

In contrast to O2F2
Dioxygen difluoride
Dioxygen difluoride is a compound with the formula . It exists as an orange solid that melts into a red liquid at −163 °C It is a strong oxidant and decomposes into and oxygen even at −160 °C .-Preparation:...

, ClO2F is a pyramidal molecule. This structure is predicted by VSEPR. The differing structures reflects the greater tendency of chlorine to exist in positive oxidation states with oxygen and fluorine ligands. The related Cl-O-F compound perchloryl fluoride
Perchloryl fluoride
Perchloryl fluoride is a reactive gas with the chemical formula . It has a characteristic sweet odor that resembles gasoline and kerosene. It is toxic and is a powerful oxidizing and fluorinating agent. It is the acid fluoride of perchloric acid....

, ClO3F, is tetrahedral.

External links

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