节点文献
螯形主体分子的设计、包结性能及其在细辛挥发油有效成分选择分离中的应用
Design of Chela - Shaped Clathrate Hosts, Inclusion Properties and Its Application to Selective Isolation of Effective Component from Volatile Oil of Chinese Herb Xixin
【摘要】 设计了两种新的具有螯形骨架的主体分子反式-1,2-二苯基-1,2-苊二醇(1)和顺式-1,2-二(1’-萘基)-1,2-苊二醇(2),主体分子(1),(2)可与许多有机小分子化合物形成配位包合物.用IR和粉末XRD表征了主体分子(1)和(2)的包结物,用1H NMR测定了包结物的主客体分子摩尔比:(1)·DMF(1:2),(1)·DMSO(1:2),(1)·THF(1:2),(1)·二氧六环(1:1),(1)·吡啶(1:1),(2)·DMF(1:1)和(2)·DMSO(1:1).单晶X射线衍射分析了包结物的晶体结构,(1)·DMF:空间群Pnaa,a= 0.9377(1),b=1.4351(1),c=4.0463(3)nm;(1)·DMSO:空间群Pbcn,a=1.6278(1),b=1.0751(1),c=1.4980(1)nm;(2)·DMF:P21/n,a=0.9796(1),b=1.2377(1),c=2.2344(3)nm,β=93.02(1)°;游离主体分子(1):空间群P1,a=1.0461(1),b=1.1213(1),c=1.5496(1)nm,α=81.74(1)°,β=75.78(1)°,γ=89.00(1)°;分析了主体分子的刚性和柔韧性对包结性能的影响.并研究了主体分子(1)选择分离细辛挥发油,将顺甲基异丁香酚从挥发油中分离出来.
【Abstract】 Two new clathrate hosts characteristic of a chela - shaped molecular back bone, trans - 1,2 -biphenyl -1,2- acenaphthendiol 1 and cis -1,2 - bi - 1’- naphthyl - 1,2- acenaphthenediol 2 were designed. 1 and 2 can form coordinatoclathrate with various small organic compounds and these inclusion compounds were confirmed by means of IR and powder XRD. The host - guest molar ratios were determined by1H NMR and the Mowing results were found: 1·DMF(1 : 2), 1·DMSO(1 = 2), 1·THF(1 : 2), 1·1,4-dioxane(1 : 1) ,1·pyridine( 1 : 1) ,2·DMF( 1:1) and 2·DMSO( 1:1) . The single crystal structures of newinclusion compounds were determined by X- ray diffraction analysis. The crystal of host(1) -DMF belongs tospace group Pnaa, a =0.9377(1), b = 1.4351(1), c = 4.0463 (3) nm and 1 ?DMSO has space groupPbcn, a = 1.6278(1), b = 1.0751(1), c = 1.4980(1) nm and host(2)·DMF belongs to P21/n, a = 0.9796(1),b = 1.2377(1),c = 2.2344(3)nm;β = 93.02(1)°,? The crystal analysis of freehost(1) showed spacegroup P1, and a = 1.046(1), b = 1.1213(l),c = 1.5496(1 )nm, α = 81.74(1)°,β = 75.78(1)°,γ =89.00(1)°. The effect of rigidity and flexibility of host molecules on inclusion properties were discussed. The selective isolation of the effective component (1,2 - dimethoxy - 4 - 2’ - propenylbenzene) from the volatile oil of Chinese herb Xixin by host(1)was carried out.
【Key words】 inclusion compounds; trans -1; 2- biphenyl -1; 2- acenaphthendiol; cis-1; 2-bi-1’-naphthyl -1; X - ray diffraction analysis.;
- 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,2000年08期
- 【分类号】O641
- 【被引频次】3
- 【下载频次】130