Gas-phase reactions of carbon cluster ions with isomeric chloropropenes

Sun J, Grützmacher H-F, Lifshitz C (1994)
International Journal of Mass Spectrometry and Ion Processes 138: 49-61.

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Abstract
Gas-phase ion/molecule reactions of carbon cluster ions (C-n(.+), n = 10-20) with allylchloride (AC) and 2-chloro-propene (CP) were investigated by Fourier transform ion cyclotron resonance spectrometry (FT-ICR). The carbon cluster ions C-n(.+) were generated by electron impact ionization of perchloroarenes and subsequent elimination of all Cl substituents from the molecular ion giving rise to monocyclic C-n(.+). Clear pseudo-first-order reactions were observed for the carbon cluster ions C-n(.+) thus formed without any sign of isomeric clusters of different reactivity. An exception is C-11(.+), for which a small amount of unreactive ions was observed. The reactions of C-n(.+) with AC and CP at low operating pressure (1.2 x 10(-8)-8.0 x 10(-7) mbar) yield product ions Cn+3H5+ by loss of Cl from an intermediate adduct. Rate constants for the reactions with CP are always distinctly larger than with AC in spite of the smaller dissociation energy of the C-Cl bond in AC. Exceptionally large reaction efficiencies are found for C-13(.+) and C-17(.+), corroborating the high reactivity of cyclic anti-aromatic C-n(.+) with n = 4r + 1. The nature of the reaction products depends on the number of carbon atoms in C-n(.+). Secondary reactions of primary product ions Cn+3H5+ were observed only for reactions of odd numbered C-13(.+) and C-17(.+). Further, on collision induced dissociation (CID) the product ions from even C-n(.+) yield exclusively C3H3+, while product ions from odd C-n(.+) generate several fragment ions by loss of H and of C-(2-4)H-2. A reaction model explaining these observations is proposed.
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Sun J, Grützmacher H-F, Lifshitz C. Gas-phase reactions of carbon cluster ions with isomeric chloropropenes. International Journal of Mass Spectrometry and Ion Processes. 1994;138:49-61.
Sun, J., Grützmacher, H. - F., & Lifshitz, C. (1994). Gas-phase reactions of carbon cluster ions with isomeric chloropropenes. International Journal of Mass Spectrometry and Ion Processes, 138, 49-61.
Sun, J., Grützmacher, H. - F., and Lifshitz, C. (1994). Gas-phase reactions of carbon cluster ions with isomeric chloropropenes. International Journal of Mass Spectrometry and Ion Processes 138, 49-61.
Sun, J., Grützmacher, H.-F., & Lifshitz, C., 1994. Gas-phase reactions of carbon cluster ions with isomeric chloropropenes. International Journal of Mass Spectrometry and Ion Processes, 138, p 49-61.
J. Sun, H.-F. Grützmacher, and C. Lifshitz, “Gas-phase reactions of carbon cluster ions with isomeric chloropropenes”, International Journal of Mass Spectrometry and Ion Processes, vol. 138, 1994, pp. 49-61.
Sun, J., Grützmacher, H.-F., Lifshitz, C.: Gas-phase reactions of carbon cluster ions with isomeric chloropropenes. International Journal of Mass Spectrometry and Ion Processes. 138, 49-61 (1994).
Sun, Jing, Grützmacher, Hans-Friedrich, and Lifshitz, Chava. “Gas-phase reactions of carbon cluster ions with isomeric chloropropenes”. International Journal of Mass Spectrometry and Ion Processes 138 (1994): 49-61.
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