【摘要】 合成了13个标题化合物POCOCH₂CH₂SnCl₃·L(R=C_1～5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=1.635nm;Z=4.该化合物为含有分子内碳基配位和Lewis碱配体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.更多还原

【Abstract】 Thirteen title complexes ROCOCH2CH2SnCl3·L(R = C1~5alkyl; L = DBSO, HMPA) were synthesized and characterized by elemental analysis, IR,1H NMR. The crystal structure of n- PiOCOCH2CH2SnCl3·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 = 1.635nm;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.更多还原