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化学学报
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化学学报 ›› 1997, Vol. 55 ›› Issue (9): 884-891. 上一篇    下一篇

研究论文

β-烷氧羰基乙基三氯化锡配合物的合成、结构表征及酯交换反应

田来进;傅芳信;朱东升;潘华德;邢彦;林永华   

  1. 东北师范大学化学系;中国科学院长春应用化学研究所
  • 发布日期:1997-09-15

Synthesis, structure characterization and transesterification of the complexes of β -alkoxycarbonylethyltin trichlorides

TIAN LAIJIN;FU FANGXIN;ZHU DONGSHENG;PAN HUADE;XING YAN;LIN YONGHUA   

  • Published:1997-09-15

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合成了13个标题化合物ROCOCH2CH2SnCl3.L (R=C1-5烷基;L=DBSO, HMPA), 通过元素分析、IR和1H NMR进行了表征。n-PrOCOCH2CH2SnCl3.DBSO的晶体结构分析表明, 该晶体属正交晶系; 空间群P212121; a=1.062, b=1.427, c=1.635; Z=4。该化合物为含有分子内羰基配位和Lewis碱配位的具有畸变八面体构型的单分子有机锡化合物。研究了CH3OCOCH2CH2SnCl3.L和醇的酯交换反应, 提出了分子内Lewis酸催化的反应机理。

关键词: 反应机理, 红外分光光度法, 元素分析, 晶体结构, 质子磁共振谱法, 羰基化合物, 酯交换, 锡络合物, 结构表征, 路易斯酸催化剂

Thirteen title complexes ROCOCH2CH2SnCl.L (R=C1-5 alkyl; L=DBSO, HMPA) were synthesized and characterized by elemental analysis, IR, 1H NMR. The crystal structure of n-PrOCOCH2CH2SnCl3.DBSO was determined by the X-ray diffraction analysis. The crystal belongs to orthorhombic system, space group P212121 with a=1.062, b=1.427, c=1.635; Z=4. The complex exists as a discrete molecule, and the tin atom attains a distorted octahedral geometry via the coordination of intramolecular carbonyl oxygen and the Lewis base donor atom. The transesterification of CH3OCOCH2CH2SnCl3.L with alcohol was studied, and the intramolecular Lewis acid catalytic mechanism was suggested.

Key words: REACTION MECHANISM, INFRARED SPECTROPHOTOMETRY, ELEMENTAL ANALYSIS, CRYSTAL STRUCTURE, PROTON MAGNETIC RESONANCE SPECTROMETRY, CARBONYL COMPOUNDS, TRANSESTERIFICATION, TIN COMPLEX, STRUCTURE CHARACTERISTICS

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