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化学学报
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化学学报 ›› 1996, Vol. 54 ›› Issue (1): 51-56. 上一篇    下一篇

研究论文

冠硫醚化学Ⅵ: 生色冠硫醚的合成及其配合机理的研究

秦勇;杨季秋   

  1. 中国科学院成都有机化学研究所
  • 发布日期:1996-01-15

Thiacrown chemistryⅥ: Synthesis of chromogenic thiacrown and their coordination

QIN YONG;YANG JIQIU   

  • Published:1996-01-15

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496

被引次数

1

本文报道了四个新的含7-氮杂-1,4,10,13-四硫杂环十六烷单元的生色冠硫醚的合成, 测定了其中3,4的电离常数分别为: pK~α=8.63(3); pK~a~1=8.49,pK~a~2=12.12(4)。通过光谱方法研究了它们与过渡金属离子的配合机理。

关键词: 电离常数, 过渡金属离子, 生色冠硫醚, 配合作用

Four new chromogenic thiacrowns bearing 7-aza-1,4,10,13- tetrathiacyclohexadecane were successfully synthesized. The acid dissociation constants of chromogenic thiacrowns 3 and 4 were determined: pK~α=8.68(3); pK~a~1=8.49, pK~a~2=12.12(4). Their coordination to transitional metal cations were spectrophotometrically studied.

Key words: IONIZATION CONSTANT

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