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Determination of the appearance potentials of [C 3 H 7 ] + ions by a computerized electron distribution difference procedure
Author(s) -
Gross M. L.,
Wilkins C. L.,
Williams R. C.,
Leung G.
Publication year - 1974
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.1210091211
Subject(s) - photoionization , halide , ion , chemistry , electron , ionization , mass spectrometry , bromide , analytical chemistry (journal) , atomic physics , electron ionization , physics , inorganic chemistry , nuclear physics , organic chemistry , chromatography
A simple computerized electron distribution difference method has been developed using a conventional mass spectrometer and an on‐line computer. Using the system, ionization potentials for various propyl halides were measured and found to agree well with photoionization data. The appearance potentials for [C 3 H 7 ] + agreed well with literature values, except for 1‐propyl bromide and 1‐ propyliodide which gave values approximately 0.7 eV lower than previous reports. The results are interpreted to indicate threshold formation of the sec‐propyl ion from all propul halides.