波谱学杂志

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Pd(OAc)2与PPh3在氯代甲烷中的反应研究

韦凤萍1,黄永仁1,冯良波2,汪汉卿2   

  1. 1.华东师范大学 教育部光学与波谱学重点实验室,上海 200062; 2.中国科学院兰州化学物理研究所,兰州 730000
  • 收稿日期:2000-12-25 出版日期:2001-03-05 发布日期:2001-03-05
  • 作者简介:韦凤萍(1964-),女,硕士,副研究员

STUDY OF THE REACTION OF Pd(OAc)2 WITH PPh3 IN CCl4

WEI Feng-ping,HUANG Yong-ren,FENG Liang-bo,WANG Han-qing   

  1. 1.Key Laboratory of Optical and Magnetic Resonance for Education Ministry, East China Normal University, Shanghai 200062; 2.Lanzhou Institute of Chemical Physics, CAS, Lanzhou 730000
  • Received:2000-12-25 Online:2001-03-05 Published:2001-03-05

摘要:

用Pd(OAc)2与PPh3在四氯甲烷中反应,合成了配合物PdCl2(PPh3)2?CCl4,得到单晶,用X-ray衍射确定了单晶结构.应用电子顺磁共振-自旋捕获(EPR-ST)技术研究了其反应的机理.捕获了含碳自由基中间体,提出了反应机理.

关键词: Pd(OAc)2, PR-ST, Pd配合物, 自由基机理

Abstract:

The complex Pd(PPh3)2Cl2?CCl4 has been prepared by treatment of Pd(OAc)2 with PPh3 in CCl4. 1H NMR, 31P NMR, data are given. The molecular structure of Pd(PPh3)2Cl2 has been determined by single crystal X-rays diffraction. The reaction mechanism is tentatively proposed and discussed. Radicals were trapped by PBN. This reaction was proved to be a free radical reaction by EPR-ST method. The solvent CCl4 participated in the reaction.

Key words: Pd(OAc)2, EPR-ST, Complex PdCl2(PPh3)2?CCl 4, Free radical mechanism

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