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Infrared spectra of heterocumulenes. III. Vibrational wave numbers and integrated absorption intensities of the diazo group of some diphenyldiazomethanes

Š. Stankovsky and Š. Kováč

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

 

Abstract: The influence of substituents on the vas(CCN) bands of diphenyldiazomethanes has been studied. Spectral data of some diphenyldiazomethanes and arenediazonium compounds have been compared. A linear dependence of integrated absorption intensities (log A) of the vas(CNN) and the v(M) bands, respectively, on Hammett σp+  substituent constants has been found (p+ = +0.126 and  p+ = —0.42, respectively). The slope p of this dependence suggests the different nature of the diazo group of both types of the compounds investigated

Full paper in Portable Document Format: 282a238.pdf

 

Chemical Papers 28 (2) 238–242 (1974)

Monday, September 16, 2019

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