用红外光谱鉴别α─多取代联苄化合物的立体构型  

Distinction of Meso-and Dl-α-Polysubstituted Dibenzy1 Compounds by Means of IR Spectroscopy

作　　者：张斌[1] 贾志胜[1] 齐陈泽[1] 

机构地区：[1]兰州大学化学系

出　　处：《兰州大学学报（自然科学版）》1994年第1期68-71,共4页Journal of Lanzhou University(Natural Sciences)

摘　　要：本文通过对５对ｍｅｓｏ和ｄｌ－２，３－二氰基－２，３－二（ｐ－Ｘ－取代苯基）丁二酯二乙醋的（Ｘ＝ＯＣＨ３、ＣＨ３、Ｈ、Ｃｌ、ＮＯ２）研究发现，ｍｅｓｏ—异构体的γＣ＝０都高于相应ｄｌ－异构体的γＣ＝０而ｍｅｓｏ异构体的γＣ－Ｏ－Ｃ却比相应ｄｌ－异构体的低，立体异构体直观地在红外光谱上反映出规律性变化。Meso-and-Dl-diethyl-2, 3-dicyano-2, 3-di (p-X substituted phenyl) succinates ( X=OCH_3、 CH_3、 H、 Cl、 NO_2) have been studied by means of IR spectroscopes. It was found that the vibration wavenumbers of meso-isomers are higher at vc=0 and lower at vc-o-c Than Those of the corresponding dl-isomers.

关 键 词：红外光谱 立体异构体 联苄化合物 

分 类 号：TQ314.241[化学工程—高聚物工业]