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Bimolecular reactions of distonic ions: Proton transfer and hydrogen atom abstraction with ˙ CH 2 OH 2 +
Author(s) -
Mourgues Philippe,
Audier Henri Edouard,
Leblanc Danielle,
Hammerum Steen
Publication year - 1993
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210281019
Subject(s) - chemistry , fourier transform ion cyclotron resonance , protonation , hydrogen atom abstraction , proton , ion , ion cyclotron resonance , molecule , hydrogen atom , proton affinity , hydrogen , photochemistry , cyclotron , organic chemistry , physics , alkyl , quantum mechanics
The bimolecular reaction of ˙ CH 2 OH 2 + with a variety of neutral molecules in the gas phase were studied by Fourier transform ion cyclotron resonance experiments. The distonic ion is found to be considerably more acidic than protonated methanol; bracketing experiments provide a value of 695 ± 8 kJ mol −1 for the proton affinity of the conjugate base, the hydroxymethyl radical, Efficient hydrogen atom abstraction is only observed from neutral species less basic than ˙ CH 2 OH. Transfer of CH 2 +˙to CS 2 , CH 3 I and C 6 H 2 F 4 is observed.