Mass-Spectrometric Study of Ion-Molecule Reactions of CH5+, C2H5+, and C3H5+ with C8-C18 Alcohols in an Ion Trap.
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Chemical ionization of n-alkyl alcohols (n-CxH2x+1–OH = M; x=8–18) by the CH5+, C2H5+, and C3H5+ ions has been studied under a reactant-ion selective mode of an ion-trap type of GC/MS. In all reactions, [M – H]+, alkyl CyH2y+1+ (y = 3−x), and alkenyl CyH2y−1+ (y = 4−x) ions were observed. On the basis of observed initial distributions and calculated thermochemical data, it was concluded that the major reactions for the formation of CyH2y+1+ were proton transfer to a hydroxy group in the CH5+ reactions, proton transfer and/or hydroxide-ion abstraction in the C2H5+ reactions, and CzH2zOH−-ion (z < x) abstraction in the C3H5+ reactions, while the major reactions for the formation of CyH2y−1+ ions were proton transfer to alkyl chain in the CH5+ reactions, hydride-ion abstraction in the C2H5+ reactions, and alkanide-ion abstraction in the C3H5+ reactions.
- 公益社団法人 日本化学会の論文
公益社団法人 日本化学会 | 論文
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