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高等学校化学研究 ›› 1988, Vol. 4 ›› Issue (2): 85-90.

• Articles • 上一篇    下一篇

The Study of Oxygen Transfer Kinetics for MoO2(S2CENt2)2 in Various Solvents

Yang Huixing, Chen Yu, He Hong   

  1. Department of Chemistry, Peking University, Beijing
  • 收稿日期:1987-09-27 出版日期:1988-04-24 发布日期:2011-09-09

The Study of Oxygen Transfer Kinetics for MoO2(S2CENt2)2 in Various Solvents

Yang Huixing, Chen Yu, He Hong   

  1. Department of Chemistry, Peking University, Beijing
  • Received:1987-09-27 Online:1988-04-24 Published:2011-09-09

摘要: The reaction kinetics between MoO2(S2CNEt2)2 and triphenylphos-phine (PPh3) were studied in various organic solvents with the aid of the stopped-flow technique. The linear correlations were found for rate constants or activation energy versus the function of refractive index (n2- 1)/(2n2 + 1). It was also found that pre-factor increases with the descent of ( n2 - l)/(2n2 - 1) slightly.One step mechanism which supposes the lone pair of electrons on P atom of triphenylphosphine enters directly into the Ⅱ* antibonding orbital, which makes the Mo= O bond broken, is suggested.

关键词: Rate constant, Activation energy, Pre-factor, Refractive index, Mechanism, Anti bond orbital

Abstract: The reaction kinetics between MoO2(S2CNEt2)2 and triphenylphos-phine (PPh3) were studied in various organic solvents with the aid of the stopped-flow technique. The linear correlations were found for rate constants or activation energy versus the function of refractive index (n2- 1)/(2n2 + 1). It was also found that pre-factor increases with the descent of ( n2 - l)/(2n2 - 1) slightly.One step mechanism which supposes the lone pair of electrons on P atom of triphenylphosphine enters directly into the Ⅱ* antibonding orbital, which makes the Mo= O bond broken, is suggested.

Key words: Rate constant, Activation energy, Pre-factor, Refractive index, Mechanism, Anti bond orbital