“Chloryl fluoride”的意思、由来-开放百科全书

词条

Chloryl fluoride

释义

Preparation
Structure
References
External links

{{chembox
| Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 446441977
| Name = Chloryl fluoride
| ImageFile = Chloryl-fluoride-3D-vdW.png
| ImageName = Chloryl fluoride
| OtherNames = chlorine dioxide fluoride
|Section1={{Chembox Identifiers
| CASNo_Ref = {{cascite|correct|??}}
| CASNo = 13637-83-7
| PubChem = 139523
| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}
| ChemSpiderID = 123044
| SMILES = FCl(=O)=O
| InChI = 1/ClFO2/c2-1(3)4
| InChIKey = YVRLYFHVJLYEHM-UHFFFAOYAO
| StdInChI_Ref = {{stdinchicite|changed|chemspider}}
| StdInChI = 1S/ClFO2/c2-1(3)4
| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}
| StdInChIKey = YVRLYFHVJLYEHM-UHFFFAOYSA-N
|Section2={{Chembox Properties
| Formula = {{chlorine}}{{oxygen|2}}{{fluorine}}
| MolarMass = 86.4502 g/mol
| Density = 3.534 g/L
| MeltingPt = −15 °C
| BoilingPt = −6 °C
|Section8={{Chembox Related
| OtherCompounds = Perchloryl fluoride
}}

Chloryl fluoride is the chemical compound with the formula ClO₂F. It is commonly encountered as 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 Schumacher 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.

The related bromine compound bromyl fluoride (BrO₂F) adopts the same structure as ClO₂F, whereas iodyl fluoride (IO₂F) forms a polymeric substance under standard conditions.^[3]

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.; Schumacher, H. J. "Über eine neue Reaktion des Chlordioxyds. Die Bildung einer Verbindung der Formel ClO₂F" Zeitschrift für anorganische und allgemeine Chemie 1942, Volume 249, pp. 238–244. DOI 10.1002/zaac.19422490302
3. ^{{cite book|title=Lehrbuch der anorganischen Chemie|author1=Holleman, A.F.|author2=Wiberg, E.|author3=Wiberg, N.|date=1995|publisher=de Gruyter|isbn=9783110126419|url=https://books.google.com/books?id=eGkvSDAqY9gC|page=501|accessdate=2015-02-20}}

External links

WebBook page for ClO2F

5 : Chloryl compounds|Oxohalides|Fluorides|Nonmetal halides|Gases

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