Bromofluoromethane
From Infogalactic: the planetary knowledge core
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Names | |
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IUPAC name
Bromofluoromethane
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Other names
Bromofluoromethylene, CFC 31B1, R 31B1
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Identifiers | |
373-52-4 ![]() |
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ChemSpider | 55059 ![]() |
Jmol 3D model | Interactive image Interactive image |
PubChem | 61108 |
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Properties | |
CH2BrF | |
Molar mass | 112.93 g/mol |
Appearance | Gas |
Boiling point | 19 °C (66 °F; 292 K) |
Structure | |
Tetrahedral | |
Vapor pressure | {{{value}}} |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references | |
Bromofluoromethane is a mixed gaseous halomethane soluble in alcohol and very soluble in chloroform.
Its standard molar entropy, Sogas is 276.3 J/(mol K) and heat capacity, cp is 49.2 J/(mol K).
Preparation
Up to date, it has been prepared by three prevailingly ineffective methods:
- From salts of fluoroacetic acid using a Hunsdiecker type of reaction.
- From dibromofluoromethane by reductive debromination with a Swarts reagent.
- From a dihalomethane by an halogen exchange reaction or from a halomethane by catalyzed bromination or fluorination.
The method with the highest yield is reductive debromination of dibromofluoromethane using an organotin hydride.[1]
Uses
Bromofluoromethane is an important reagent in the manufacture of intermediates, pharmaceuticals and other chemicals. Usage of bromofluoromethane is regulated due to its ozone depletion potential (0.73). Its isotopomer CH2Br18F is used in radiochemistry.
References
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