Abstract
Abstract The large intensity enhancement of spectra observed at a silver electrode-solution interface in the presence of chloride ions and pyridine is attributed to the resonance Raman excitation of radical species. The bands observed at 227 cm−1 and 750 nm (ΔR/R) are assigned to the presence of Clxxx2 radical anions. The band at 1025 cm−1 and the bands at 1008 and 1036 cm−1as well as the shoulder at 650 nm (ΔR/R) are attributed respectively to the formation of pyridinium radical cations and pyridinyl radical anions.
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