Molecular Complexation of Arenediazonium Ions by a Calix[4]arene Possessing Two Ester Groups : Molecular Tweezers
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概要
- 論文の詳細を見る
The spectroscopic behaviors of arenediazonium ions in the absence and the presence of a novel calix[4]arene 1,3-alternate conformer possessing two (ethoxycarbonyl) methoxy groups 4 were studied by UV-visible, 1H NMR, and IR spectra for the first time. 1,3-alternate conformer 4 exhibits the large hyposochromic shifts of 85 nm and the binding constants (Ka) values are greater than 104 M-1, indicating the fact that 4 strongly associates with the diazo group, the interaction being comparable with that with 18-crown-6. However, 4 can not inhibit the dediazoniation of the diazo group indicating the mechanism (A), the macrocyclic effect which sterically inhibits dediazoniation proceeding from the linear Ar-N+ ≡ N inserted in the crown ring to the bulky π-intermediate II, is responsible for the stabilization of the diazo group.
- 日本油化学会の論文
- 2004-06-01
著者
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MURATA Shigeo
National Institute of Materials and Chemical Research (NIMC)
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ARIMURA Takashi
National Instiufe of Materials and Chemical Research, COE laboratory
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IDE Seiji
National Instiufe of Materials and Chemical Research, COE laboratory
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NISHIOKA Takuya
National Instiufe of Materials and Chemical Research, COE laboratory
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Murata S
National Institute Of Advanced Industrial Science And Technology (aist)
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KUMAMOTO Satoshi
National Institute of Advanced Industrial Science and Technology (AIST)
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TACHIYA M.
National Institute of Advanced Industrial Science and Technology (AIST)
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Tachiya Masanori
AIST Fellow
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Tachiya Masanori
National Inst. Advanced Industrial Sci. And Technol. Tsukuba Jpn
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Kumamoto Satoshi
Nanotechnology Res. Inst. Aist
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Nishioka Takuya
National Institute Of Advanced Industrial Science And Technology (aist)
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MURATA Shigeo
National Institute of Advanced Industrial Science and Technology (AIST)
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ARIMURA Takashi
National Institute of Advanced Industrial Science and Technology (AIST)
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Ide Seiji
National Institute of Advanced Industrial Science and Technology (AIST)
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