Electronic absorption spectra and acidities of heteroaromatic thiols

The electronic absorption spectra of a number of substituted and unsubstituted thiophene-, benzothiophene-, and benzofuranthiols were studied, and their ionization constants were determined by establishment of the dependence of the optical densities of aqueous alcohol solutions of them on the pH.Translated from Khimiya Getero-tsiklicheskikh Soedinenii, No. 10, pp. 1313–1314, October, 1980.