Hidden rearrangement processes in short-lived negative molecular ions |
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Authors: | M. V. Muftakhov P. V. Schukin R. V. Khatymov |
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Affiliation: | (1) Institute of Molecule and Crystal Physics, Ufa Research Center, Russian Academy of Sciences, 151 prosp. Oktyabrya, 450075 Ufa, Russian Federation |
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Abstract: | The study of resonant electron capture by nitrobenzene molecules showed that some fragmentary negative ions are unstable toward electron autodetachment. The measured appearance energy of the neutral component of an [M — H]− ion beam does not agree with the energetics of direct dissociation in a molecular ion. The estimation calculations show that the low appearance energy of [M — H]0 neutral components is caused by isomerization of a molecular ion of nitrobenzene to the 2-nitrobenzene structure followed by the formation of a phenoxide ion in the autodetachment state. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 367–370, February, 2006. |
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Keywords: | mass spectrometry resonant electron capture negative ions rearrangements nitrobenzene 2-nitrosophenol structure |
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