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.
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