摘要
利用二丁基氧化锡与杂环羧酸反应,合成8个有机锡化合物二{氧合-二[杂环羧酸二丁基锡(IV)]}.通过元素分析、红外光谱、核磁共振氢谱和锡谱对其结构进行了表征.用X射线单晶衍射测定了二{氧合-二[2噻吩甲酸二丁基锡(IV)]}的晶体结构,结果表明,该化合物是以Sn2 O2四面体为中心的,中心对称的二聚体结构,内、外环锡原子均为六配位的畸变八面体构型.该化合物晶体属单斜晶系,空间群P2(1)/n,a=1.3721(10)nm,b=1.7297(13)nm,c=1.3721(10)nm,β=93.709(8)°,Z=2,V=3.249(4)nm^(3),Dc=1.505g/cm^(3),μ=1.695mm^(-1),F(000)=1480,R=0.0480,wR=00978.
The eight organotin compounds bis{oxo-bis[(heteroaromatic carboxylato)di-n-butyltin(IV)]}were synthesized by the reaction of(n-Bu)_(2)SnO with heteroaromatic carboxylic acid in 1∶1 molar ratio.The crystal structure of bis{oxo-bis[(2-thiophenylcarboxylato)di-n-butyltin(IV)]}was determined by single-crystal X-ray diffraction.This compound belongs to centrosymmetric dimer structure mode with a four-membered central endo-cyclic Sn_(2)O_(2)unit in which the bridging oxygen atoms are tri-coordinated.Each bridging oxygen atom also connects with an exo-cyclic tin atom.The endo-cyclic and exo-cyclic tin atoms all are six-coordinated and have coordination geometry of distorted octahedron.The crystal belongs to monoclinic system with space group P2(1)/n,a=1.3721(10)nm,b=1.7297(13)nm,c=1.3721(10)nm,β=93.709(8)°,Z=2,V=3.249(4)nm^(3),D c=1.505 g/cm^(3),μ=1.695 mm^(-1),F(000)=1480,R=0.0480,wR=0.0978.
作者
尹汉东
王传华
邢秋菊
YIN Han—Dong;WANG Chuan—Hua;XING Qiu—ju(Department of Chemistry,Liaocheng University,Liaocheng 252059)
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
2004年第7期770-774,J002,共6页
Chinese Journal of Organic Chemistry
基金
国家自然科学基金(No.20271025)
山东省自然科学基金(No.L2003B01)资助项目
关键词
有机锡
杂环羧酸
合成
晶体结构
organotin
heteroaromatic carboxylic acid
synthesis
crystal structure
