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Gas‐phase ion chemistry in germane–propane and germane–propene mixtures
Author(s) -
Benzi Paola,
Operti Lorenza,
Rabezzana Roberto,
Vaglio Gian Angelo
Publication year - 2002
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/jms.319
Subject(s) - germane , chemistry , propene , propane , ion , yield (engineering) , reaction rate constant , medicinal chemistry , organic chemistry , germanium , kinetics , thermodynamics , catalysis , silicon , physics , quantum mechanics
Germane–propane and germane–propene gaseous mixtures were studied by ion trap mass spectrometry. Variations of ion abundances observed under different partial pressure ratios and mechanisms of ion–molecule reactions elucidated by multiple isolation steps are reported. In addition, the rate constants for the main reactions were experimentally determined and compared with the collisional rate constants to obtain the reaction efficiencies. The yield of ions containing both Ge and C atoms is higher in the germane–propene than in the germane–propane system. In the former mixture, chain propagation takes place starting from germane ions reacting with propene and proceeds with the formation of clusters such as Ge 2 C 4 H n + and Ge 3 CH n + . Copyright © 2002 John Wiley & Sons, Ltd.