Raman Spectrum of Selenium Dissolved in an Aqueous Solution of Sodium Sulfide

Abstract

The Raman spectrum of selenium dissolved in an aqueous solution of sodium sulfide was measured using an YAG laser and a multiple-reflection cell, and an intense broad band was observed at 264 cm -1 . This frequency is higher than those of the corresponding symmetric bond-stretclaing modes in any solid form of selenium. This is explained by considering the decrease of the interference between inter- and intramolecular bondings in the solution.