Fragmentation of 1- and 3-methoxypropene ions another part of the C4H 8O (+•) potential energy surface.
The fragmentation mechanisms of metastable ionized 1- and 3-methoxypropene have been examined in detail by using ionization and appearance energy measurements, metastable ion and collisional activation mass spectra, and a variety of isotopically labeled molecules. These metastable C4H8O(+•) ions fragment by loss of H; CH3, and H2CO, and the experimental observations allowed the construction of the potential energy diagram which describes their interconversion and the participation of four other distonic and carbene C4H8O(+•) ions. It was found that these two methyl alkenyl ether ions had no common reaction channel with either the 2-methoxy isomer or with any of the alcohol, keto, or enol C4H8O(n+•) isomers which previously have been extensively studied.
Department of Chemistry, University of Ottawa, 32 George Glinski, K1N # 6NS, Ottawa, Ontario, Canada.
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Cao
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George
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Holmes