化学学报 ›› 1989, Vol. 47 ›› Issue (3): 288-292. 上一篇    下一篇

研究论文

高效液相色谱法研究二(烷基黄原酸)合钯(II)间的配体交换反应动力学

石铁生;王安周   

  1. 河北大学化学系
  • 发布日期:1989-03-15

A kinetic study on the ligand exchanges between bis (alkylxanthato)palladium (II) by high-performance liquid chromatography

SHI TIESHENG;WANG ANZHOU   

  • Published:1989-03-15

高效液相色谱法, 由于其分辨率高和检测浓度低, 在研究反应物和产物的结构和物理化学性质极为相似的反应中显示出独特的本领, 本文利用高效液相色谱法, 在12-32℃(研究了二(烷基黄原酸)合钯(II)间的配体交换反应动力学.

关键词: 反应动力学, 高速液体色谱, 黄原酸类, 交换反应, 钯络合物

The kinetics of ligand exchange between bis(alkylxanthato)palladium(II) complexes were studied at 12-32? The equilibrium constants determine were always 4.0 ?0.5, consistent with the value calculated statistically. Both the forward and backward reactions are 2nd-order. Isokinetic relations were observed A decreasing reaction rate was found in various solvents with CCl4 > CHCl3 > CH2Cl2. An 8-membered ring species is proposed as the intermediate in the rate-detg. step.

Key words: REACTION KINETICS, HIGH SPEED LIQUID CHROMATOGRAPHY, XANTHOGENIC ACIDS, EXCHANGE REACTION, PALLADIUM COMPLEX

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