Chloryl fluoride

Chloryl fluoride
Other names chlorine dioxide fluoride
Identifiers
CAS number	13637-83-7
Properties
Molecular formula	ClO2F
Molar mass	86.4502 g/mol
Density	3.534 g/L
Melting point	-15 °C
Boiling point	-6 °C
Y fluoride (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Chloryl fluoride is the chemical compound with the formula ClO₂F. It is commonly encountered side-product in reactions of chlorine fluorides with oxygen sources.^[1] It is the acyl fluoride of chloric acid.

Preparation

ClO₂F was first reported by Schmitz and Schumacheb in 1942, who prepared it by the fluorination of ClO₂.^[2] 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, 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, ClO₃F, is tetrahedral.

References

1. ^ Chrisie, K. O.; Wilson, R. D.; Schack, C. J. "Chloryl fluoride" Inorganic Syntheses, 1986, volume 24, pages 3-5. ISBN 0-471-83441-6
2. ^ Schmitz, H.; Schumacheb, H. J. "Über eine neue Reaktion des Chlordioxyds. Die Bildung einer Verbindung der Formel ClO₂F" Zeitschrift für anorganische und allgemeine Chemie 1942, Volume 249, Pages 238 - 244. DOI 10.1002/zaac.19422490302

External links

• WebBook page for ClO2F