Current time in Korea 10:22 May 23 (Thu) Year 2019 KCS KCS Publications
KCS Publications
My Journal Log In Register
HOME > Search > Browsing(BKCS) > Archives

Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 3, Number 1
BKCSDE 3(1)
January 20, 1982 

 
Title
The New Substituent Constants in the Excited States
Author
Sang Chul Shim, Joon Won Park, Hie Seok Ham
Keywords
Abstract
The new substituent constants (σ*) are calculated from the acidity constants (pK*) of phenol derivatives in the excited state (1Lb). These substituent constant are applied to the Hammett equations and found good correlation with pK* of 2,6-di-tert-butyl phenol, benzamide, nitroaniline, thiophenol, azobenzene, and benzoic acid derivatives. The correlation was much better than that of ground state substituent constants such as σ, σ+, and σ-. From these results, the new substituent constants (σ*) are proposed to be used for the linear free energy relationship in the 1(π,π*) excited states of phenyl compounds.
Page
13 - 18
Full Text
PDF