ESR STUDY OF SOLUTIONS OF SULFUR AND POLYSULFIDES IN LIQUID AMMONIA

V. Pinon , E. Levillain , A. Demortier , J. Lelieur

An ESR study of solutions of sulfur and polysulfides in liquid ammonia gives evidence of a simple Lorentzian line located at g = 2.0292. This signal must be assigned to the radical anion S3- identified in these solutions by spectrophotometry and Raman spectroscopy. It is shown that S3- is the only radical species in these solutions. The concentration of S3- has been determined from the ESR experiments for a wide concentration range of the solutions. For the various solutions, the concentration of S3- increases with the concentration of the solution and goes through a maximum, located in the concentrated range of solutions. This maximum is qualitatively interpreted by a spin pairing mechanism between the S3-radicals.

Domaines: Articles anciens

V. Pinon, E. Levillain, A. Demortier, J. Lelieur. ESR STUDY OF SOLUTIONS OF SULFUR AND POLYSULFIDES IN LIQUID AMMONIA. Journal de Physique IV Proceedings, 1991, 01 (C5), pp.C5-223-C5-230. ⟨10.1051/jp4:1991526⟩. ⟨jpa-00250650⟩