化学学报 ›› 1992, Vol. 50 ›› Issue (5): 508-514. 上一篇    下一篇

所属专题: 纪念南开大学化学学科创建100周年

研究论文

三苄基锡羧酸酯的合成及其结构表征

谢庆兰;徐效华;张殿坤   

  1. 南开大学元素有机化学研究所
  • 发布日期:1992-05-15

Synthesis and structure analysis of tribenzyltin carboxylates

XIE QINGLAN;XU XIAOHUA;ZHANG DIANKUN   

  • Published:1992-05-15

本文以(三苄基锡)氧化物和相应的羧酸反应, 合成了20个三苄基锡羧酸酯, 由波谱对结构的研究表明, 红外光谱的酰基振动频率与羧基上取代基的空间和电子效应密切相关, 三苄基锡羧酸酯的结构微小变化, 明显地反映了^1^1^9Sn和^1^3CNMR化学位移的差异, ^1^1^9Sn化学位移与三苄基锡取代的苯甲酸酯的对位取代基Hammett常数(σ)之间存在着良好的线性关系: δ~1~1~9~S~n=15.48σ+14.23, n=7, r=0.995, 去烃基化是这一类化合物质谱裂解的特点。

关键词: 羧酸, 生物活性, 红外分光光度法, 分子结构, 质谱法, 核磁共振谱法, 羧酸酯, 苄基, 表征, 有机锡化合物

Twenty tribenzyltin carboxylates were synthesized by reaction of bis(tribenzyltin) oxide with corresponding carboxylic acids. The compounds were characterized spectrally and by elemental anal. The IR vibrational frequencies of the carboxyl group relate to bulk and electronic effects. A slight structural change of these compounds can reflect on the difference of 119Sn, 13C chem. shifts and their coupling constants

Key words: CARBOXYLIC ACID, BIOLOGICAL ACTIVITY, INFRARED SPECTROPHOTOMETRY, MOLECULAR STRUCTURE, MASS SPECTROGRAPHY, NMR SPECTROMETRY, CARBOXYLIC ACID ESTER, BENZYL GROUP, CHARACTERIZATION, ORGANO TIN COMPOUNDS

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