Bromofluoromethane is a mixed gaseous halomethane

Halomethane

Halomethane compounds are derivatives of methane with one or more of the hydrogen atoms replaced with halogen atoms . Halomethanes are both naturally occurring, especially in marine environments, and man-made, most notably as refrigerants, solvents, propellants, and fumigants...

 soluble in alcohol

Alcohol

In chemistry, an alcohol is an organic compound in which the hydroxy functional group is bound to a carbon atom. In particular, this carbon center should be saturated, having single bonds to three other atoms....

 and very soluble in chloroform

Chloroform

Chloroform is an organic compound with formula CHCl3. It is one of the four chloromethanes. The colorless, sweet-smelling, dense liquid is a trihalomethane, and is considered somewhat hazardous...

.

Its standard molar entropy

Standard molar entropy

In chemistry, the standard molar entropy is the entropy content of one mole of substance, under standard conditions ....

, S^o_gas is 276.3 J/(mol K) and heat capacity

Heat capacity

Heat capacity , or thermal capacity, is the measurable physical quantity that characterizes the amount of heat required to change a substance's temperature by a given amount...

, c_p is 49.2 J/(mol K).

Preparation

Up to date, it has been prepared by three prevailingly ineffective methods:

1. From salts of fluoroacetic acid
   Fluoroacetic acid
   Fluoroacetic acid is a compound with formula H. It is between acetic acid and trifluoroacetic acid....
   
    using a Hunsdiecker type of reaction.
2. From dibromofluoromethane
   Dibromofluoromethane
   Dibromofluoromethane is a mixed halomethane. It is soluble in alcohol, acetone, benzene and chloroform.It can be used to prepare bromofluoromethane by reductive debromination with organotin hydride as tributyltin hydride....
   
    by reductive debromination with a Swarts reagent.
3. From a dihalomethane by an halogen exchange reaction or from a halomethane by catalyzed bromination
   Halogenation
   Halogenation is a chemical reaction that incorporates a halogen atom into a molecule in substitution of hydrogen atom. Halogenation takes place in the gas phase. There are four types of halogenation: fluorination, chlorination, bromination, and iodination...
   
    or fluorination
   Halogenation
   Halogenation is a chemical reaction that incorporates a halogen atom into a molecule in substitution of hydrogen atom. Halogenation takes place in the gas phase. There are four types of halogenation: fluorination, chlorination, bromination, and iodination...
   
   .

The method with the highest yield is reductive debromination of dibromofluoromethane using an organotin hydride.

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

Ozone depletion potential

The ozone depletion potential of a chemical compound is the relative amount of degradation to the ozone layer it can cause, with trichlorofluoromethane being fixed at an ODP of 1.0. Chlorodifluoromethane , for example, has an ODP of 0.055...

(0.73). Its isotopomer CH₂Br¹⁸F is used in radiochemistry.

External sources

• Determination of the molecular dipole moment of bromofluoromethane