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DOI: 10.1039/A703760K (Paper) Reference Section for: J. Chem. Soc., Perkin Trans. 2, 1997, 2201-2206

Structural investigations of C-nitrosobenzenes. Part 1. Solution state 1H NMR studies

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Daniel A. Fletcher, Brian G. Gowenlock and Keith G. Orrell

Abstract

Ambient and low temperature 1H NMR spectra of a wide range of 3- and 4-monosubstituted, and some di- and tri-substituted C-nitrosobenzenes have enabled –N[double bond, length half m-dash]O substituent constants for the static and rotating ring molecules to be calculated. This has provided information on the shielding anisotropy of the N[double bond, length half m-dash]O group which in turn leads to the firm identification of the monomeric and dimeric solution species. In all cases lowering the solution temperature enhances the relative populations of dimers to monomers, with the (Z)-azodioxy dimer being preferred over the (E)-form, irrespective of the nature of the solid state dimeric structure.

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