Phase Dependence of Carbon-11 Recoil Products in Ethane and Propane; Evidence for Methylene Insertion

1963 
It is shown that the recoil product spectrum from C11 reactions with ethane is gas and liquid phases and from propane in gas, liquid, and solid phases is dependent on the phase. The C12 (n,2n)C11 reaction was used to produce the C11 recoils. The change from gas to liquid phase caused a drop in the sum of ethylene and acetylene yields in both ethane and propane. A further decrease in these yields was observed for solid propane. An increase in 3 carbon compounds for ethane and 4 carbon compounds for propane was found when the phase was changed. Yields were in agreement with predictions based on the de-excitation and methylene insertion hypothesis. (M.C.G.)
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