Spectroscopic Study of Charge-Transfer Complexes of Some Dicyclohexano-Crown Ethers with Π-acceptors in Dichloromethane Solution

被引：0
作者：
Deeb Marji
W. Al-Azzam
机构：
[1] Yarmouk University,Chemistry Department
来源：
Journal of inclusion phenomena and macrocyclic chemistry | 1999年 / 33卷
关键词：
charge-transfer complexes; crown ethers; Π-acceptors; formation constants; UV-visible spectra; salt effect;
D O I：
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学科分类号：
摘要：
A spectrophotometric study was conducted on solutions of dicyclohexano-18-crown-6 and dicyclohexano-24-crown-8 with some Π-acceptors in methylene choride at 25 °C. The spectroscopic data indicate the formation of a charge-transfer complex. In contrast to previous results, our study shows that the Ph-O-CH2 structure is not essential for the formation of charge-transfer complexes. The formation constants (Kf) were calculated and the effect of KCl and NaCl salts on the formation and stability of the complexes is discussed.
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页码：277 / 283
页数：6
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