O ( 1 D) reaction with cyclopropane: Evidence of O atom insertion into the C–C bond

The O(1D)+C3H5 reaction has been investigated using the universal crossed molecular beam method. A number of reaction pathways have been observed. One of the most interesting channels is the H2CO/HCOH+C2H4 process, in which H2CO products are clearly identified. Experimental results indicate that the H2CO products are likely produced through a long-lived complex formation process, for which insertion of O(1D) into the C–C bond should be responsible.