高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (3): 288.

• 论文 • 上一篇    下一篇

[Co(tp)2(Me3en)]ClO4配合物不对称配位氮原子的重氢化研究

马桂林, 许宜铭   

  1. 扬州师范学院化学系, 扬州, 225002
  • 收稿日期:1991-04-17 出版日期:1992-03-24 发布日期:1992-03-24
  • 通讯作者: 马桂林

Studies on the Deuteration at the Chiral Nitrogen of Bis(tropolonato) (N, N, N' -Trimethyl ethyl enediamine) Cobalt (Ⅲ) Complexes

MA Gui-lin, XU Yi-ming   

  1. .Department of Chemistry, Yangzhou Teachers' College, Yangzhou, 225002
  • Received:1991-04-17 Online:1992-03-24 Published:1992-03-24

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摘要： 合成了[Co(tp)2(Me3en)]ClO4配合物,用离子交换法提纯和分离了该配合物的2对对映体:Δ(R)∧(S)、Δ(S)∧(R)异构体,用高分辨NMR法分别测定了这2对对映体的不对称配位氮原子的重氢化速率常数kD值分别为:1.0×105和1.8×104L·mol-1·s-1(34.0℃),讨论了影响重氢化作用的因素。

关键词: 钴配合物, 2-羟基-2, 4, 6-环庚三烯-1-酮, N, N, N&prime, -三甲基乙二胺, 重氢化速率常数

Abstract: Bis(tropolonato)(N,N,N'-trimethylethylenediamine) Cobalt(Ⅲ) complex, [Co(tp)2 (Me3en)]ClO4(Me3en = N,N,N' -trimethylethylenediamine, tp=univalent anion of tropolone), was synthesized.The complex was purified and separated into two racemic pairs (△(R) (S) and △(S) (R)-isomers) by the ion exchange method.The rate constants of deuteration(kD) at the chiral nitrogen were measured by high-resolution 1H NMRspectrometry.The value of kD at 34.0℃ was 1.0×105L·mol-1·s-1 for △(R) (S)-isomer and 1.8 × 104 L·mol-1·s-1 for △(S) (R)-isomer.The factors which influence the deuteration are also discussed in this paper.

Key words: Cobalt complex, Troplone, N,N,N'-trimethylethylenediamine, Rate constant of deuteration

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