波谱学杂志 ›› 1988, Vol. 5 ›› Issue (1): 15-19.

• 研究论文 • 上一篇    下一篇

亚磷酸二烷基酯及其汞化物的光解活泼自由基的ESR研究

李二成, 周建威, 徐广智   

  1. 中国科学院化学研究所 北京
  • 收稿日期:1987-02-09 修回日期:1987-06-06 出版日期:1988-03-05 发布日期:2018-01-22
  • 基金资助:
    国家自然科学基金资助课题

APPLICATION OF ESR AND SPIN TRAPPING TECHNIQUE TO PHOTOLYSIS OF DIALKYL PHOSPHITES AND THEIR MERCURY DERIVATIVES

Li Ercheng, Zhou Jianwei, Xu Guangzhi   

  1. Institute of Chemistry, Academia Sinica, Beijing, China
  • Received:1987-02-09 Revised:1987-06-06 Online:1988-03-05 Published:2018-01-22

摘要: 本文用自旋捕捉技术和ESR方法,对亚磷酸二烷基酯(RO)2P(O)H(R=C2H5,n-C3H7,i-C3H7,n-C4H9)及其汞化物(RO)2 P(O)HgX(X=OAc,Cl,Br)的光解产物进行了研究。结果表明,亚磷酸二烷基酯的汞化物比亚磷酸二烷基酯更容易产生自由基(RO)2p(O)。据此对汞化物中P-Hg的成键特征进行了讨论。

关键词: 亚磷酸二烷基酯, 汞衍生物, 光解, 自旋捕捉, ESR

Abstract: The active intermediates produced in the photolysis of dialkyl phosphites (RO)2P(0)H (R=C2H5, n-C3H7, i-C3H7, n-C4H9) and their mercury derivatives (RO)2P(0)HgX(X=OAc, Cl, Br)were studied by spin trapping and ESR spectro-scopy. The results showed that radicals (RO)2 P(0) were formed from the above two types of compounds during UV irradiation, and could be trapped by PBN. From the fact that the homolysis of P-Hg bond is much easier than that of P-H bond, the bonding characteristics of P-Hg bond in the mercury compounds is discussed.

Key words: Dialkyl phosphites, Mercury derivatives, Photolysis, Spin trapping, ESR