学术
摘 要:
1，1，6，6-四苯基-2，4-己二炔-1，6-二醇（D．D）与茴香醛在不同的结晶条件下形成主客体分子物质的量比分别为2：1和1：2的包结物晶体。x-射线单晶衍射测试结果表明，在2：1（h／g）包结物晶体中，D．D通过形成闭合氢键网，构筑了1维zigzag主体分子框架超结构，形成的隧道框架对茴香醛具有识别作用；在1：2（h／g）包结物晶体中，主体分子采取0维框架超结构，按2，次螺旋轴呈zigzag形状排列，茴香醛分子与主体分子通过OH…O强氢键作用进入主体分子构筑的隧道。它们互为超分子异构体。产生异构体的原因是，在前者包结物晶体中，主体分子采取邻位交叉式构象，而在后者的包结物晶体中，主体分子采取对位交叉式构象，因此，它们又是超分子构象异构体。[著者文摘]
文章出处:
《渤海大学学报：自然科学版》-2007年28卷4期 -289-296页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1673-0569（2007）04-0289-08
相关文章:
Supramolecular isomerism formed by D. D with of inclusion crystalline p - anisaldehyde
GUO Wen-Sheng, HU Zhi-Quan, WANG Zhong-Hua, GUO Fang （Institute of Chemical Science ＆ Engineering, Liaoning University, Shenyang 110036, China）
Abstract:
Inclusion crystals with molar ratio （host/guest） of 2 ： 1 and 1：2 are formed by 1,1,6,6 -tet- raphenylhexa -2,4 -diyne - 1,6 -diol（ D. D） with p -anisaldehyde in different crystal conditions respectively. The results of x - ray single crystal diffraction show that 1 D zigzag ribbon host framework is constructed by D. D molecules through closed H - bonds network formed themselves in inclusion crystal with molar ratio of 2 ：1 （host/guest）, and p -anisaldehyde molecules are packed into tunnel enelosodby 1 D zigzag ribbon, while in inclusion crystal with molar ratio of I ：2 （host/guest）, the framework of D. D. molecules is 0 D. structure, and arrayed in zigzag shape according to 21 screw ro/ation axis, and through molecular interaction of OH 0 = C strong H - bonds, p - anisaldehyde molecules are packed into tunnel enelosod by D.D. molecules. They are supramoleeular isomers to each other. In the former inclusion crystal, D. D. molecule adopted gauche con- formation, while in the latter inclusion crystal, D.D. molecule adopted antiperiplanar conformation, and these are the cause of supramoleeular isomers formed. Therefore, they are regarded as supramoleeular conformation isomers.[著者文摘]
Key words:
supramoleeular conformation isomers ; inclusion compound; 1,1,6,6 - tetraphenylhexa - 2,4 - diyne - 1,6 -did; p - anisaldehyde
基金资助:
国家自然科学基金项目（No：20372031）.
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