Mass spectra of negative ions of condensed aromatic hydrocarbons and biphenyl

Conclusions The positions of the maxima of the effective yield of the (M-H)^– ions on the energy scale of the electrons for condensed hydrocarbons and biphenyl coincide with the maximum yield of the (M-H)^– ions for benzene. The existence of a molecular ion M^–, with a life span with respect to autoionization of 21sec, was observed for anthracene.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1885–1886, August, 1973.