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- W1964560355 abstract "The gas-phase radiolysis of cyclo-C4H8 and cyclo-C4D8 has been investigated in the presence of O2, NO, H2S, NH3, and several organic compounds. From the products formed, it could be inferred that the following fragmentation processes occur: C4H8+→C3H5++CH3,C4H8+→C2H4++C2H4,C4H8+→C2H5++C2H3,C4H8+→C3H4++CH4.At 20 Torr, the ion-pair yields which can be ascribed to some of these processes are lower than the corresponding ion-pair yields observed in the mass spectrometer at a pressure of 10−5 Torr. When compounds such as NO (I.P.=9.25 eV) or (CH3)3N(I.P.=7.8 eV) are added to cyclobutane, butene (I.P.=9.13–9.58 eV) is a major product. On the other hand, when organic or inorganic compounds whose ionization energy is higher than that of butene are added to cyclobutane, the yield of butene is, in most cases, negligibly small. The formation of butene can be tentatively accounted for by a ring opening of the parent ion followed by charge transfer. On the basis of this mechanism, a minimum value of 0.42±0.02 can be ascribed to M(C4H8+)/N. When an electrical field is applied in the saturation current region, during radiolysis of cyclobutane—NO mixtures, the yields of methane, ethane, and butene which have the parent ion or fragments thereof as precursors, remain unchanged. On the other hand, the yields of products such as ethylene, allene, acetylene, and 1,3-butadiene whose formation is, in part, attributed to the decomposition of neutral excited molecules, are seen to increase due to increased excitation by electron impact. In the absence of an electrical field, the number of neutral excited molecule decompositions per ion pair is estimated to be ≤0.65±0.05." @default.
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- W1964560355 date "1966-02-15" @default.
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- W1964560355 title "Gas-Phase Radiolysis of Cyclobutane" @default.
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- W1964560355 doi "https://doi.org/10.1063/1.1726903" @default.
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