Ring-to-ring proton exchange in di- and oligophenyl alkanes upon gas phase protonolysis

Kuck D (1983)
International Journal of Mass Spectrometry and Ion Physics 47(Jan): 499-502.

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Abstract
Protonolysis of diphenylmethane (1) and three oligophenyl alkanes (2 to 4) has been studied by chemical ionization mass spectrometry of some deuterium-labelled analogues. 1H+ ions reveal that intra-ring proton equilibration is complete within 10 [mu]s whereas inter-ring proton exchange is slow. 2H+, 3H+, and 4H+ ions, additionally, undergo complete inter-ring proton equilibration involving all of the 16 or 21 protons at the aromatic rings. A surprising double C6H6 elimination is found to occur in 2H+, 3H+, and 4H+ ions, suggesting that C6H6 acts as a ‘solvent’ of [MH - C6H6]+ and [MH - 2C6H6]+ ions prior to final fragmentation.
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Kuck D. Ring-to-ring proton exchange in di- and oligophenyl alkanes upon gas phase protonolysis. International Journal of Mass Spectrometry and Ion Physics. 1983;47(Jan):499-502.
Kuck, D. (1983). Ring-to-ring proton exchange in di- and oligophenyl alkanes upon gas phase protonolysis. International Journal of Mass Spectrometry and Ion Physics, 47(Jan), 499-502.
Kuck, D. (1983). Ring-to-ring proton exchange in di- and oligophenyl alkanes upon gas phase protonolysis. International Journal of Mass Spectrometry and Ion Physics 47, 499-502.
Kuck, D., 1983. Ring-to-ring proton exchange in di- and oligophenyl alkanes upon gas phase protonolysis. International Journal of Mass Spectrometry and Ion Physics, 47(Jan), p 499-502.
D. Kuck, “Ring-to-ring proton exchange in di- and oligophenyl alkanes upon gas phase protonolysis”, International Journal of Mass Spectrometry and Ion Physics, vol. 47, 1983, pp. 499-502.
Kuck, D.: Ring-to-ring proton exchange in di- and oligophenyl alkanes upon gas phase protonolysis. International Journal of Mass Spectrometry and Ion Physics. 47, 499-502 (1983).
Kuck, Dietmar. “Ring-to-ring proton exchange in di- and oligophenyl alkanes upon gas phase protonolysis”. International Journal of Mass Spectrometry and Ion Physics 47.Jan (1983): 499-502.
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