Acta Phys. -Chim. Sin. ›› 1990, Vol. 6 ›› Issue (05): 523-527.doi: 10.3866/PKU.WHXB19900504

• ARTICLE • Previous Articles     Next Articles

Electrochemical Reduction of 3-Nitro-Benzoic Acid in DMSO Media

Wu Zhong-Da; Zhao Ming; Jiao Yang-Yang   

  1. Chemistry Department, Beijing Normal University
  • Received:1989-09-02 Revised:1989-11-23 Published:1990-10-15
  • Contact: Wu Zhong-Da

Abstract: The electrochemical reduction of 3-nitro-benzoic acid (3-NBA) has been investi-gated on Pt electrode in DMSO media by cyclic voltammetry and controlled potential electrolysis, in combination with ESR spectroscopy. The results show that 3-nitro-ben-zoic acid is reduced through a three-electron process to a of species of nitroso group. Hyperfine structures of ESR spectrum of the free radical were observed. The ESR parameters of the simulation have been determined as a_1~N = 10.91G, a_2~H=1.12G, a_4~H=a_6~H=3.38G, a_5~H=3.96G. The rate constant of the decay of free radical was evaluated as k=k=4.814×10~(-2)s~(-1).