Chloromethanes and nitrogen dioxide

Chloromethanes react with nitrogen dioxide in the gas phase. Carbon tetrachloride reacts slowly at 385 °C whereas the other chloromethanes are more reactive. The kinetics of the reactions involving the three lower 

The reaction of some chloromethanes with nitrogen dioxide 

Chloromethane Temp. range (°C) Order with respect to log A (mole, 1 units) F, sec (cal. mole Ref, ) 

The observations suggest a chain reaction initiated by H-atom abstraction 

This is supported by the appearance of CH2 CINO2 but no CH3 NO 2 in the reaction products from methyl chloride, and by the fact that carbon tetrachloride is relatively unreactive compared with the other compounds. The initiation step is followed by 

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