高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (12): 1843.

• 论文 • 上一篇    下一篇

钛与3,5-二溴水杨基荧光酮配位反应的弛豫动力学研究

朱必学, 林智信, 蔡汝秀   

  1. 武汉大学化学系, 武汉, 430072
  • 收稿日期:1995-12-13 出版日期:1996-12-24 发布日期:1996-12-24
  • 通讯作者: 蔡汝秀
  • 作者简介:朱必学,男,30岁,贵州大学化学系.
  • 基金资助:

    国家自然科学基金

Studies on Relaxation Kinetics of Coordination Reaction Between Ti and 3,5-Dibromosalicylfluorone

ZHU Bi-Xue, LIN Zhi-Xin, CAI Ru-Xiu   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1995-12-13 Online:1996-12-24 Published:1996-12-24

PDF (PC)

被引次数

7

摘要： 用跳浓弛豫法测定了微扰体系在不同浓度[Ti4+]时的弛豫时间τ,拟定了合理的反应机理,并根据此机理导出了1/τ的函数表达式为1/τ=k[H4R]0/[H3O+]0-4k·A∞/ε·[H3O+]0,获得了配位反应的表现稳定常数K、表观速率常数k及摩尔吸光系数ε；其中所得稳定常数K的值与用平衡移动法获得的结果相吻合,进一步证明了所拟机理的合理性。

关键词: 配位反应, 弛豫动力学, 机理, 钛

Abstract: In this paper,the relaxation time was determined at different Ti(Ⅳ)concentrations by the concentration jump relaxation method. The reasonable mechanism is drawn up.The expression of 1/was derived from the assumed mechanism of reaction. The apparentrate constant and molar absorbance index were obtained by the concentration jump relaxation Tnethod.The results shows that the value of stability constant of the complex (K=1.799×109) is in agreement with that (K=2.12 × 109)obtained by using equilibrium movement method.

Key words: Coordination reaction, Relaxation kinetics, Mechanism, Titanium

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