Chem. J. Chinese Universities ›› 2000, Vol. 21 ›› Issue (4): 570.

• Articles • Previous Articles     Next Articles

Determination of Heterolytic and Homolytic S_NO Bond Dissociation Energies in Acetonitrile

LU Jian-Ming, ZHU Xiao-Qing, LI Qian, HE Jia-Qi, XIAN Ming, CHENG Jin-Pei    

  1. Department of Chemistry, Nankai University, Tianjin 300071, China
  • Received:1999-11-08 Online:2000-04-24 Published:2000-04-24

Abstract: Heterolytic and homolytic S_NO bond dissociation energies are determined in acetonitrile at 25 ℃ by using titration calorimetry and electrochemical measurements with a well-designed thermodynamic cycle. The results suggest that S_NO compounds in vivo may release NOin a manner of homolytic bond dissociation. Other effects that influence the bond energies are also discussed.

Key words: NO affinity, S-Nitroso compound, S_NO bond energy, Titration calorimetry

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