Abstract
Literature data on the resonance Raman spectroscopy of amino- and dimethylaminoazobenzene are analyzed based on concepts formulated earlier for the rydimeric structure of amino azo dyes. The traditional monomeric–quinoid theory of tautomerism and color is shown to be inadequate when attributing bands in the Raman spectra of protonated species of amino- and dimethylaminoazobenzene. Resonance Raman spectra are adequately characterized using the concept of the rydimeric structure of protonated species. It is revealed that protonated rydimers become strong acids upon photoexcitation.
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