Spectrophotometric study of the interaction between tetraethylammonium halides and aza-15-crown-5 with I2 and ICl in acetonitrile solution

被引：0
作者：
Faculty of Science, Shahrekord University, Shahrekord, Iran [1 ]
不详 [2 ]
机构：
[1] Faculty of Science, Shahrekord University, Shahrekord
[2] Faculty of Science, Malek-ashtar University of Technology, Shahin-shahr
来源：
Bull. Korean Chem. Soc. | 2006年 / 6卷 / 886-892期
关键词：
Acetonitrile; Aza-15-crown-5; Iodine; Iodine monochloride; Spectrophotometry;
D O I：
10.5012/bkcs.2006.27.6.886
中图分类号：
学科分类号：
摘要：
The interaction between tetraethylammonium chloride (TEACl) with ICl and tetraethylammonium iodide (TEAI) and aza-15-crown-5 (A15C5) with I2 and ICl have been examined spectrophotometrically in acetonitrile solution. The results of TEACl-ICl indicate the formation of ICl2- through equilibrium reaction. In the case of TEAI-I2 and A15C5-I 2, the equilibrium formation of I3- is confirmed. The interaction of TEAI-ICl begins with the simultaneous production of I2 and ICl2- (at TEAI/ICl < 0.5) as well as continues with the simultaneous consumption of I2 and formation of I3- (at TEAI/ICl > 0.5). Similar behavior is also observed for A15C5-ICl system. However, the changes are seen at A15C5/ICl mole ratios less and more than 0.66. Several equations have been suggested for the formation of detected species. The formation constants of various reactions were evaluated from the computer fitting of the absorbance-mole ratio data. IR spectra of A15C5 and 1:1 A15C5:ICl or A15C5:I2 complexes are compared and the effect of complexation on absorption bands is discussed.
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页码：886 / 892
页数：6
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