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Collision‐induced dissociation of negative ions in the gas phase: [Aryl S] − , [aryl SO] − and [aryl SO 2 ] −
Author(s) -
Bowie John H.,
Stringer Michael B.
Publication year - 1985
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.1210200212
Subject(s) - dissociation (chemistry) , chemistry , ion , aryl , hydrogen , medicinal chemistry , gas phase , crystallography , organic chemistry , alkyl
Collision‐induced dissociation of the ions [ArS] − , [ArSO] − and [ArSO 2 ] − has uncovered a rich and varied ion chemistry. The major fragmentations of [ArS] − are complex and occur without prior ring hydrogen scrambling: for example, [C 6 H 5 S] − →[C 2 HS] − and [HS] − ; [ p ‐CD 3 C 6 H 4 S] − →[C 6 H 4 S] − ˙, [CD 3 C 4 S] − and [C 2 HS] − . In contrast, all decompositions of [C 6 H 5 CH 2 S] − are preceded by specific benzylic and phenyl hydrogen interchange reactions. [ArSO 2 ] − and [ArSO 2 ] − ions undergo rearrangement, e.g. [C 6 H 5 SO] − →[C 6 H 5 O] − and [C 6 H 5 S] − ; [C 6 H 5 SO 2 ] − →[C 6 H 5 O] − . The ion [C 6 H 5 CH 2 SO] − eliminates water, this decomposition is preceded by benzylic and phenyl hydrogen exchange.