Spectra and structure for Bi0-BiCl3-Li,K/Cl

Raman-scattering, electronic-absorption, and ESR spectra have been used to determine the states of bismuth and the structures of the compounds formed in molten chloride systems; it is found that BiCl₄ ^– with T_d symmetry are formed in BiCl₃-Li, K/Cl_eu melts, while a Bi⁰-BiCl₃-Li, K/Cl_eu melt produces the BiCl₄ ^– BiCl₃ + Cl^–; BiCl₃ + Bi⁰ Bi₂Cl₃ equilibria with the formation of Cl^– the quasitetrahedral ion in the second stage, which has a metal-bond and a single unpaired electron.Institute for General and Inorganic Chemistry, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 27, No. 3, pp. 311–315, May–June, 1991. Original article submitted September 12, 1988.