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Carbon‐13 nuclear magnetic resonance of the azomethine group. II —(II.II) conjugation and twist angles
Author(s) -
SolladiéCavallo A.,
Solladié G.
Publication year - 1977
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270100153
Subject(s) - steric effects , conjugated system , chemistry , group (periodic table) , twist , crystallography , resonance (particle physics) , stereochemistry , polymer , geometry , organic chemistry , atomic physics , physics , mathematics
Torsional angles in some mono‐substituted conjugated benzenes were determined from the chemical shift of the para carbons. Similar results were obtained from ketones and imines, and the torsional angles increase, as expected, with steric hindrance. It is possible to assign a syn or anti stereochemistry for the imines from the value of the torsional angle.