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β-环糊精-对氨基苯甲醛包合物的合成和晶体结构
Synthesis and Crystal Structure of β-Cyclodextrin-4-aminobenzaldehyde Inclusion Compound
【摘要】 合成了β-环糊精-对氨基苯甲醛包合物,利用X-射线衍射分析测定了包合物的晶体结构,其分子式为(C42H70O35).(C7OH7N).6.17H2O,属单斜晶系,P21空间群,a=1.511 4(2)nm,b=1.026 4(4)nm,c=2.090 7(3)nm,Dc=1.494 g/cm3,β=110.42o(2),V=3.039 5(3)nm3,Z=2,μ=0.134 mm-1,F(000)=1 434,最小二乘修正后,最终偏离因子R1=0.075,S=0.996;晶体结构测定结果表明,该包合物为浅包结方式,客体分子(对氨基苯甲醛和水)与主体分子间靠分子内和分子间氢键来维系,形成密集的氢键网络,氢键作用力是包合物存在的一个重要因素.
【Abstract】 The synthesis and crystal structure of β-cyclodextrin-4-aminobenzaldehyde inclusion compound are reported here.The formula is(C42H70O35)(C7OH7N)·6.17H2O.The crystal structure is monoclinic,space group P21 with a=1.511 4(2) nm,b=1.026 4(4) nm,c=2.090 7(3) nm,Dc=1.494 g/cm3,β=110.42o(2),V=3.039 5(3) nm3,Z=2,μ=0.134 mm1,S=0.996,F(000)=1 434,final R1=0.075.The results of structure determination indicate that the inclusion compound is in the style of "shallow inclusion".The hydrogen-bond between guest molecules(4-aminobenzaldehyde and the water molecules) and host molecules is the main force to form the supramolecular system and keep it stability.The structure is a dense hydrogen-bond network.
【Key words】 β-cyclodextrins; 4-aminobenzaldehyde; inclusion compound; crystal structure;
- 【文献出处】 天津师范大学学报(自然科学版) ,Journal of Tianjin Normal University(Natural Science Edition) , 编辑部邮箱 ,2006年04期
- 【分类号】O631.3
- 【被引频次】1
- 【下载频次】195