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The steric effect as a mechanistic tool in mass spectral decompositions. Comments on the activated complex for the loss of no from substituted nitrobenzenes
Author(s) -
Bursey Maurice M.
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.1210020906
Subject(s) - steric effects , nitrobenzene , chemistry , ring (chemistry) , halogen , computational chemistry , stereochemistry , organic chemistry , alkyl , catalysis
The effect of ortho substituents in nitrobenzence radical cation decompositions are discussed for non‐interacting halogen substituents. These effects are distinct from those of the same substituents in the meta and para positions, and support previous indications that ring position identity is retained in nitrobenzene molecular ions. More importantly, the steric effect of the halo substituents may be gauged from these data; it indicates that several previously suggested mechanisms for the loss of NO must be reconsidered. The existence of steric effect in very well defined systems may be used as a structural tool in organic mass spectrometry.