梯形二聚体二正丁基锡羧酸酯的合成和晶体结构  

Synthesis and crystal structure of a ladder dimeric di-n-butyltin carboxylates

作　　者：梅泽民[1] 孙凯 朱超光[3] 朱东升[3] 

机构地区：[1]白城师范学院化学系,吉林白城137000 [2]吉林省食品工业产品质量监督监测站,吉林长春130021 [3]东北师范大学化学学院,吉林长春130024

出　　处：《东北师大学报（自然科学版）》2010年第3期94-97,共4页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(0971019);吉林省科技发展计划项目(20060571;20070406);吉林省教育厅资助项目(2005172)

摘　　要：将(n-Bu2Sn)2O(二正丁基氧化锡)与有机酸HL(HL=2-(2-甲氧基-4-甲酰基苯氧基)乙酸)在苯中进行脱水,用乙醇重结晶,获得新型二正丁基锡羧酸酯[(n-Bu2Sn)4(L)2O2(OC2H5)2](1).采用元素分析、1HNMR、FT-IR和晶体结构测定等手段对其进行了结构表征.结果表明:3个双锡双氧环构成以平面Sn2O2为中心的对称梯形二聚体结构;2个环内Sn原子为五配位,构成以Sn原子为中心的扭曲三角双锥构型;2个环外Sn原子均为六配位,构成以Sn原子为中心的扭曲单加帽三角双锥构型.The complex [（n-Bu_2Sn）_4（L）_2O_2（OC_2H_5）_2]（1）[where,HL is 2-（2-methoxy-4-formylphenoxy）acetic acid]has been prepared and structurally characterized by means of elemental analysis,1H NMR and FT-IR spectroscopies.The crystal structures of 1 has been determined by X-ray crystallography.Three distannoxane rings are present to the centrosymmetric dimeric tetraorganodistannoxane by virtue of μ3-oxo form the central Sn2O2 core with a planar Sn2O2 ring,resulting in a ladder type structural motif in the molecular structure of 1,and five-coordinated tin atoms are present in the distannoxane dimer.Two endo-cyclic internal tin atoms adopt distorted trigonal bipyramidal geometry with five-coordinated;Two exo-cyclic tin atoms adopt distorted monocapped trigonal bipyramidal geometry with six-coordinated.

关 键 词：有机锡(Ⅳ)羧酸酯 二正丁基氧化锡 2-(2-甲氧基-4-甲酰基苯氧基)乙酸 晶体结构 

分 类 号：O624[理学—有机化学] O614[理学—化学]