Bromofluoromethane

Structural formula
General
Surname	Bromofluoromethane
other names	Bromofluoromethylene; CFC 31B1; R 31B1;
Molecular formula	CH 2 BrF
External identifiers / databases
ECHA InfoCard	100.117.922
PubChem	61108
ChemSpider	55059
Wikidata	Q765816
properties
Molar mass	112.93 g mol −1
Physical state	liquid
boiling point	19 ° C
solubility	soluble in ethanol and chloroform
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Bromofluoromethane is a chemical compound from the group of aliphatic and saturated halogenated hydrocarbons or dihalomethanes .

Extraction and presentation

Bromofluoromethane can be prepared from salts of fluoroacetic acid using a Hunsdiecker-type reaction . The compound can also be obtained from dibromofluoromethane by reductive debromination with a Swarts reaction . Production from a dihalomethane, for example methylene bromide (fluorination with antimony (III) fluoride ), by a halogen exchange reaction or from a halomethane, for example bromomethane or fluoromethane , by bromination or fluorination over a catalyst such as aluminum oxide is also possible . In addition, the representation is by stepwise reduction of tribromofluoromethane or dibromofluoromethane using an organotin hydride such as tri-n-butyltin hydride .

properties

Bromofluoromethane is a liquid that is soluble in ethanol and chloroform . The compound has a melting point of 152 K. However, the liquid only solidifies at 140 K. In this temperature range, the substance exhibits the properties of a supercooled melt. Bromofluoromethane crystallizes in the monoclinic crystal structure with the space group I 2 / a (space group no. 15, position 3) with two symmetrically independent formula units. Template: room group / 15.3

use

Bromofluoromethane is an important reagent in the manufacture of intermediates, pharmaceuticals, and other chemicals.

Web links

Commons : Bromofluoromethane - Collection of pictures, videos and audio files

Individual evidence

↑ ^a ^b ^c David R. Lide: CRC Handbook of Chemistry and Physics A Ready-reference Book of Chemical and Physical Data . CRC Press, 1995, ISBN 978-0-8493-0595-5 , pp. 67 ( limited preview in Google Book search).
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
^ S. Narayan Natarajan, AL Rheingold: Synthesis of Bromofluoromethane. In: Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry . 14, 2006, pp. 837-841, doi : 10.1080 / 00945718408068780 .
↑ ^a ^b Document DE3906273C2: Process for the production of bromofluoromethane - Document DE3906273C2 , accessed on November 4, 2018.
↑ Feller, Michael (2016): Interactions of small fluorine-containing molecules under cryogenic conditions. Dissertation, LMU Munich: Faculty of Chemistry and Pharmacy, URN: urn: nbn: de: bvb: 19-201832 .

[David_R._Lide-1] David R. Lide: CRC Handbook of Chemistry and Physics A Ready-reference Book of Chemical and Physical Data . CRC Press, 1995, ISBN 978-0-8493-0595-5 , pp. 67 ( limited preview in Google Book search).

[NV-2] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[DOI10.1080/00945718408068780-3] S. Narayan Natarajan, AL Rheingold: Synthesis of Bromofluoromethane. In: Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry . 14, 2006, pp. 837-841, doi : 10.1080 / 00945718408068780 .

[patent-de.com-4] Document DE3906273C2: Process for the production of bromofluoromethane - Document DE3906273C2 , accessed on November 4, 2018.

[Feller-5] Feller, Michael (2016): Interactions of small fluorine-containing molecules under cryogenic conditions. Dissertation, LMU Munich: Faculty of Chemistry and Pharmacy, URN: urn: nbn: de: bvb: 19-201832 .