Abstract
The flash photolysis of chlorine monoxide in a large excess of inert gas yields chlorine and oxygen, the normal products of photolysis, accompanied by measurable quantities of the ClO radical as an intermediate. The normal and chlorine-sensitized decompositions of chlorine monoxide are studied and a reaction scheme is proposed for the system which has the character of a short-chain reaction with CIO and CI acting as chain carriers. By a study of the decay of the CIO radical and the formation of chlorine dioxide, rate constants are derived for the CIO decay, the production of chlorine dioxide and the straight-chain decomposition of chlorine monoxide by the CIO radical.

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