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有机化学
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有机化学 ›› 1992, Vol. 12 ›› Issue (2): 172-276. 上一篇    下一篇

研究论文

芳基重氮盐及其18-冠醚-6络合物的低频红外光谱

赵瑶兴;孙祥玉;李前荣   

  1. 北京分子动态及稳态结构实验室;中国科学技术大学结构研究实验室
  • 发布日期:1992-04-25

Low-frequency IR spectra of arenediazonium salts and their 18-crown-6 complexes

ZHAO YAOXING;SUN XIANGYU;LI QIANRUN   

  • Published:1992-04-25

被引次数

1

本文合成了九种不同取代基的苯基四氟硼酸重氮盐及其与18-冠醚-6形成的分子络合物, 考察它们的低频红外光谱, 讨论这类络合物的成键状况。

关键词: 红外分光光度法, 重氮化合物, 分子络合物, 冠醚, 四氟硼酸

Low-frequency (500 ~ 100 cm-1) IR of nine substituted arenediazonium tetrafluoroborates and their complexes with 18-crown-6 were reported. The wavenumbers of the complex bonds at ca. 250 cm-1 and the net charge densities on b-N of diazo group calculated with EHMO were correlated with substituent constants (s,+-sm+) and sp+, resp. The observations revealed coordination in these complexes stemed from p-electron transfer from the b-N atom of diazo group to the crown moiety.

Key words: DIAZO COMPOUNDS, INFRARED SPECTROPHOTOMETRY, CROWN ETHER

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