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Infrared spectra of heterocumulenes. IV. Influence of substituents on the νas(NNN) bands of some substituted phenyl azides

Š. Stankovsky and Š. Kováč

Department of Organic Chemistry, Slovak Technical University, 880 37 Bratislava

 

Abstract: The influence of substituents on wavenumbers, integrated absorption intensities, and half-band widths of the vas(NNN) bands of nine substituted phenyl azides has been discussed. A linear relationship between integrated absorption intensities (log A) and Hammett σ  and σ+ substituent constants of electron-withdrawing substituents has been observed (ρ = 0.201 and ρ+ = 0.201, respectively). It has been found that the azide group is of dual electron nature.

Full paper in Portable Document Format: 282a243.pdf

 

Chemical Papers 28 (2) 243–246 (1974)

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