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Updated: Apr 6, 2026

Raman and IR Spectroelectrochemical Methods as Tools to Analyze Conjugated Organic Compounds
Published on: October 12, 2018
Low temperature in situ Raman spectroscopy of an electro-generated arylbis(arylthio)sulfonium ion
Kouichi Matsumoto1, Yu Miyamoto, Kazuaki Shimada
1Department of Chemistry, School of Science and Engineering, Kindai University, Kowakae 3-4-1, Higashi-Osaka, Osaka 577-8502, Japan. kmatsumo@chem.kindai.ac.jp wakaba@chem.kindai.ac.jp.
Abstract:
A low temperature in situ Raman spectroscopic method was developed for the detection of unstable intermediates in electro-organic chemistry. It was effective for monitoring the generation of ArS(ArSSAr)(+) by the electrochemical oxidation of ArSSAr (Ar = p-FC6H4) in Bu4NBF4/CH2Cl2 at 195 K. The intensity of a Raman band at 427 cm(-1), which is attributable to the S-S vibration of ArS(ArSSAr)(+), increased with an increase in the electricity until 2/3 F of the electricity was consumed, whereas decreased with a further increase in the electricity indicating the decomposition of ArS(ArSSAr)(+).
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