β—环糊精与邻、对氨基苯甲酸包结物诱导圆二色性的情况  

INDUCED CIRCULAR DICHROISM OF β-CYCLODEXTRIN COMPLEXES WITH 2-AMINOBENIOIC ACID AND 4-AMINOBENZOIC ACID

作　　者：何南峰[1] 李健美 常俊标[3] 林素凤[3] 

机构地区：[1]河南大学化学化工系,开封475001 [2]郑州工学院,郑州450002 [3]河南化学研究所,郑州450003

出　　处：《河南科学》1993年第1期53-57,共5页Henan Science

摘　　要：探讨了β—环糊精与氨基苯甲酸包结物的诱导圆二色性。β—CD_x主体分子不对称场诱导了非手性客体分子,使其产生了ICD谱。若客体分子被极化的电子跃迁方向沿客体分子长轴时得到正的ICD信号;否则得到负的ICD信号。其包结物的旋转强度可用Kirkwood—Tinoco方程近似求得。In the present article, the Induced Circular Dichroism (ICD) of β-cyclodextrin-(β-CD_x) complexes with aminobenzoic acid was investigated. We observed the ICD on the absorption bands of achiral substituted benzene molecules, which is considered to be induced by the dissymmetric field of the chiral β-CD_x host molecule. The electronic transitions which are po- larized along the long axis of the substituted benzenes showed positive ICD, while the signals of the ICD of short-axis polarized transitions are negative. The rotational strengths of these inclusion complexes were calculated by the Kirkwood-Tinoco expression.

关 键 词：环糊精 包结 圆二色性 氨基苯甲酸 

分 类 号：O625.636[理学—有机化学]