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Fourier transform ion cyclotron resonance study of the dehydrogenative polymerization of allene and propyne induced by W + in the gas phase
Author(s) -
Ferhati Azedine,
Sozzi Georges,
Ohanessian Gilles
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.1210281216
Subject(s) - allene , propyne , fourier transform ion cyclotron resonance , chemistry , ion cyclotron resonance , ion , dissociation (chemistry) , photochemistry , cyclotron , organic chemistry , catalysis
Abstract A Fourier transform ion cyclotron resonance study of the gas‐phase reaction of W + with allene is reported. W + successively dehydrogenates at least nine allene molecules, leading to the formation of a series of WC 3 n H 2 n +ions, with WC 27 H 18 +as the largest product observed after a reaction delay of 40 s. Starting from the third reaction, there is a competition between elimination of H 2 and C 2 H 2 at each step. The activation of propyne was also investigated and found to lead to essentially the same sequence as with allene. The reaction of W + with 1,1‐ d 2 ‐allene and collision‐induced dissociation spectra of product ions are used to discuss a plausible mechanism for the formation and structures of some of the species observed.