Spectrophotometric study of the charge transfer complexes of 4′-nitrobenzo-15-crown-5 and benzo-15-crown-5 with iodine in nonaqueous solvents

被引：8
作者：
Alizadeh, Nina [1 ]
Dehghanikhah, Sadegh [1 ]
机构：
[1] Univ Guilan, Fac Sci, Dept Chem, Rasht, Iran
来源：
CHINESE CHEMICAL LETTERS | 2011年 / 22卷 / 05期
关键词：
Charge transfer complex; Spectrophotometry; Kinetic; Crown ether; SECONDARY DONOR GROUPS; LARIAT ETHERS; MACROCYCLIC POLYETHERS; MOLECULAR-COMPLEXES; CATION BINDING; FLEXIBLE ARMS; ION; DEPENDENCE; STABILITY; CONSTANTS;
D O I：
10.1016/j.cclet.2010.11.032
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The formation of charge transfer complex between iodine with 4`-nitrobenzo-15-crown-5 (NB15C5) and benzo-15-crown-5 (B15C5) is investigated spectrophotometrically in chloroform and dichloromethane (DCM) solutions at 25 degrees C. The pseudo-first-order rate constants for the transformation process were evaluated from the absorbance time data and found to vary in the order of DCM > CHCl3. The values of the formation constant, K-f, for each complex are evaluated from Benesi-Hilebrand equation. Stability of the resulting complex in two solvents was also found to vary in the order of DCM > CHCl3. (c) 2010 Nina Alizadeh. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
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页码：587 / 590
页数：4
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