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NMR study of the monomer—dimer equilibria of dimethylnitrosobenzenes in solution. Identification of mixed azodioxy dimeric species

✍ Scribed by Keith G. Orrell; David Stephenson; Thierry Rault

Publisher: John Wiley and Sons
Year: 1989
Tongue: English
Weight: 715 KB
Volume: 27
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260270413

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✦ Synopsis

The monomer-dimer equilibria of 2 , 6 and 3,5-dimethylnitrosobenzenes in CDCI, solution were investigated by 'H and/or I3C NMR spectroscopy. The mixed systems nitrosobenzene + 2,6dimethylnitrosobenzene and 2 , 6 dimethylnitrosobenzene + 3,5dimethylnitrosobemne 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 'H 1D spectra and/or 'H ZD-EXSY spectra measured at different temperatures. KEY WORDS 'H NMR I3C NMR 2,6-Dimethylnitrosobenzene 3,5-Dimethylnitrosobenzene Monomer-dimer equilibria Mixed azodioxy dimers ~ ~ ~~

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