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NMR studies of complex formation between N ‐methyl morpholine and sulphur dioxide
Author(s) -
Harris R. K.,
Spragg R. A.
Publication year - 1969
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.1270010407
Subject(s) - morpholine , nitrogen inversion , chemistry , sulfur , methylene , sulfur dioxide , proton magnetic resonance , inversion (geology) , nitrogen , carbon dioxide , photochemistry , computational chemistry , nuclear magnetic resonance , inorganic chemistry , organic chemistry , physics , paleontology , structural basin , biology
Proton magnetic resonance spectra of methylene dichloride solutions containing N ‐methyl morpholine and sulphur dioxide have been studied as a function of temperature. Complex formation reduces the rate of interchange of magnetic sites via inversion at nitrogen but increases the rate of ring inversion. The conformational preference of the complex is discussed. It is suggested that interaction with SO 2 may be a useful general method of studying nitrogen inversion.