Pressure Effects on Mass Spectra of Picoline N-Oxides

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概要

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• The mass spectral fragmentations of 2-, 3-and 4-picoline N-oxides were studied at various sample pressures. The relative intensities of the fragment ions greatly depend upon the sample pressure even at pressures in the normal working range. From the patterns of logarithmic ion intensity-pressure curves, the formation mechanisms of the fragment ions are classified into four types of reactions. They are the unimolecular decomposition of the molecular ion, the fragmen-tations including some intermediate ions, the formation of secondary ions, and the fragmentations including two or three kinds of these reactions. The fragmentations including the intermediate ions may occur in the first step of decompositions concerned with the skeletal rearrangements of the molecular ion.

• 日本質量分析学会の論文

著者

• Uchida Mitsuo

  Shizuoka College of Pharmacy

関連論文

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• Mass Spectra of Quinazoline N-Oxides
• Pressre Effect on The Peaks due to(P-HCN)+Ion in Mass Spectra of Pyridines
• Studies on Pyrazolo[3, 4-d]pryimidine Derivatives.VII. : Mass Spectra of Pyrazolo[3, 4-d]pyrimidine 5-Oxides
• Pressure Effects on Mass Spectra of Picoline N-Oxides

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