Assignation of Acidic Dissociation Constants of Dimethoxyphenylfluorone and Dibromodimethylaminophenylfluorone  

Assignation of Acidic Dissociation Constants of Dimethoxyphenylfluoron

作　　者：陈天明 王东进 等 

机构地区：[1]DepartmentofChemistry,FuzhouUniversity,Fuzhou,3500 [2]DepartmentofChemistry,FuzhouU

出　　处：《Chinese Journal of Structural Chemistry》1996年第4期297-300,共4页结构化学（英文）

摘　　要：The acidic dissociation constants of dimethoxyhenylfluorone (DMOPF)and dibromo-dimethylaminophenylflurone(Br_2-DMAPF) were determined from a spectrophotometric study, with the results as follows:DMOPF: pk_1=2. 68 pk_2=6. 79 pk_3=9.25 pk_4=12. 14 Br_2-DMAPF: pk_1=2.08 pk_2=4. 12 pk_3=9. 02 pk_45=11.02 The assignation for the possibly occurred shapes in media of various acidity has been accomplished by comparing the calculated results of π-electronic distribution and maximum absorption wave lengths from Huckel molecular orbital(HMO) method with those from the spectrophotometric ones.

关 键 词：dissociation constant assignation organic reagent SPECTROPHOTOMETRY Hückel molecular orbital method 

分 类 号：O626.3[理学—有机化学] O657.3[理学—化学]