Current time in Korea 10:35 Mar 29 (Fri) Year 2024 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 1, Number 3
BKCSDE 1(3)
March 20, 1980 

 
Title
The Charge Transfer Complexes of Monoalkylbenzene with Iodine in Carbon Tetrachloride (Ⅱ)
Author
Oh Cheun Kwun
Keywords
Abstract
Ultraviolet spectrophotometric investigations were carried out on monoalkylbenzene-iodine systems in carbon tetrachloride. The results reveal the formation of one-to-one molecular complexes. On the basis of the equilibrium constants for these complexes of representative monosubstituted benzenes, the following order of increasing stability is obtained: i-propyl- < i-butyl- < t-butyl- < n-butyl-benzene. The values ofΔH,ΔG and ΔS for the interaction of a number of monoalkyl substituted benzenes with iodine have been determined. In general, it can be said that as ΔH becomes increasingly negative, corresponding decreases in the ΔG and the ΔS values are observed, and these variations are linear. The thermodynamic constants become increasingly negative with increasing monoalkyl substitution of the aromatic donor nucleus. The complex bond is therefore weak, and its formation is accompanied by relatively small entropy changes. Thus, analysis of these findings is discussed.
Page
87 - 93
Full Text
PDF