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Substituent effects on physical-properties of substituted azobenzenes

J.B. Kyziol and H. Frej

Instytut Chemii, Wyisza Szkola Pedagogiczna, PL-45-052 Opole

 

Abstract: A series of symmetrical 4,4'-disubstituted azobenzenes has been prepared. Their dipóle moments vary within the range of 1.2 to 8.1 x 10-30 Cm. The Raman, mass, and 13C NMR spectra are reported and discussed. The properties of azobenzenes point out an electron-withdrawing character of the azo bridge. It has been claimed that the nonzero value of the azobenzene dipóle moment results from the hybridization of the ni­trogen atoms, intermediate between the sp2 and sp3 state.

Full paper in Portable Document Format: 426a781.pdf

 

Chemical Papers 42 (6) 781–793 (1988)

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