Trifluoronitrosomethane, photolysis

Trifluoronitrosomethane may be obtained from photolysis of a mixture of trifluoroiodo-methane and nitric oxide [275, 276] or from pyrolysis of trifluoroacetyl nitrite [277, 278] (Figure 8.108). 

Trifluoronitrosomethane is unusual among nitroso compounds in that it exists as a monomer that is deep blue and is therefore one of the few highly coloured simple polyfluoro compounds. On photolysis, a species derived from radical coupling is formed [276] (Figure 8.109). 

A variety of fragmentation reactions lead to perfluorocarbonimidoyl difluorides. For example, addition of trifluoronitrosomethane to tetra-fluoroethylene yields the oxazetidine derivative LXXV, which upon thermolysis or photolysis ( ) gives trifluoromethylcarbonimidoyl difluoride (LXXVI) and carbonyl fluoride. 

---