波谱学杂志 ›› 1989, Vol. 6 ›› Issue (2): 187-192.

• 研究论文 • 上一篇    下一篇

顺二羰基(二齿N-配体)铑(Ⅰ)——四苯硼酸盐配合物光解的ESR研究

纪海星, 袁国卿, 徐广智, 陈荣耀   

  1. 中国科学院化学研究所, 北京
  • 收稿日期:1988-04-16 修回日期:1988-08-23 出版日期:1989-06-05 发布日期:2018-01-22
  • 基金资助:
    国在自然科学基金资助课题;中国科学院青年奖励基金资助课题

ESR STUDY OF PHOTOLYSIS IN CIS-DICARBONYL (BIDENTATEN-DONOR LIGANOL) RHODIUM(Ⅰ) Tetraphenyl Borate Coordination Compounds

Ji Haixing, Yuan Guoqing, Xu Guangzhi, Chen Rongyao   

  1. Institute of Chemistry, Academia Sinica, Beijing
  • Received:1988-04-16 Revised:1988-08-23 Online:1989-06-05 Published:2018-01-22

摘要: 本文用自旋捕捉技术与ESR相结合的方法,研究四羰基二氯二铑和八种顺二羰基(二齿N-配体)铑(Ⅰ)四苯硼酸盐配合物光解的活泼中间体.结果表明,四羰基二氯二铑光解初级过程是Rh-Rh键的均裂,产生Rh中心自由基,并可为PBN,ND及TBN捕获.顺二羰基(二齿N-配体)铑(Ⅰ)四苯硼酸盐配合物光解的初级阶段,产生的都是Bph4-阴离子分解的Ph·自由基,且随着配体为氮杂环,苯胺环,及吡啶环,阳离子稳定性降低.

关键词: 自旋捕捉技术, 顺二羰基铑络合物, 自由基, ESR

Abstract: Active intermediate produced during photolysis of[Rh(CO)2Cl]2 and eight cis-dicarbonyl (didentate N-donor ligand) Rh (Ⅰ) tetraphenyl borate[Rh(CO)2 (Chel)] Bph4 were investigated by combining spin trapping technique with ESR. The results show that the primary process of photolysis in[Rh(CO)2Cl]2 is homolytic cleavage of the Rh-Rh bond to produce Rhodium-centered free radicals. They can be trapped by PBN, ND and TBN. And the photolysis of cisdicarbonyl (bidentate N-donor ligand) Rhodium (Ⅰ) tetraphenyl borate produced ph radicals of Bph4 anion, and stability of the spin adducts are related to the bidentate N-donor ligand.

Key words: Spin trapping technique, Cis-dicarbonyl Rhodium complex, Radicals, ESR