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NMR study of the monomer—dimer equilibria of dimethylnitrosobenzenes in solution. Identification of mixed azodioxy dimeric species
Author(s) -
Orrell Keith G.,
Stephenson David,
Rault Thierry
Publication year - 1989
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260270413
Subject(s) - chemistry , dimer , monomer , nitrosobenzene , nuclear magnetic resonance spectroscopy , nmr spectra database , spectral line , crystallography , stereochemistry , polymer , organic chemistry , catalysis , physics , astronomy
The monomer‐dimer equilibria of 2,6‐ and 3,5‐dimethylnitrosobenzenes in CDCI 3 solution were investigated by 1 H and/or 13 C NMR spectroscopy. The mixed systems nitrosobenzene + 2,6‐dimethylnitrosobenzene and 2,6‐dimethylnitrosobenzene + 3,5‐dimethylnitrosobenzene were also studied, and mixed azodioxy dimers were identified. In all systems exchange occurs exclusively between dimer and monomer species, rates and activation energies being calculated from time‐dependent 1 H 1D spectra and/or 1 H 2D‐EXSY spectra measured at different temperatures.