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The ions [CH 3 S] + , [C 2 H 5 S] + and [CH 3 O] + formed by electron‐impact
Author(s) -
Amos D.,
Gillis R. G.,
Occolowitz J. L.,
Pisani J. F.
Publication year - 1969
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.1210020206
Subject(s) - ion , chemistry , deuterium , mass spectrum , crystallography , analytical chemistry (journal) , physics , atomic physics , organic chemistry
Abstract The mass spectra of deuterated species shows that both the isomeric ions [CH 2 SH] + and [CH 3 S] + are formed in the ratio 2:1 from CH 3 SH; the ions [CH 3 CHSH] + and [CH 3 CH 2 S] + in the ratio 0·8:1 from CH 3 CH 2 SH; and [CH 2 OH] + and [CH 3 O] + in the ratio 6·7:1 from methanol. The heats of formation of [CH 3 S] + and [C 2 H 5 S] + are of the order of 222 and 203 Kcal.mole −1 respectively. The isomeric ions cannot be distinguished on thermodynamic grounds.