-
- Matsui Yoshihisa
- Faculty of Life and Environmental Science, Shimane University
-
- Ono Masaharu
- Faculty of Life and Environmental Science, Shimane University
-
- Tokunaga Shuichi
- Faculty of Life and Environmental Science, Shimane University
書誌事項
- タイトル別名
-
- NMR Spectroscopy of Cyclodextrin-Inorga
この論文をさがす
抄録
The addition of alkali salts of chaotropic anions such as Br−, I−, SCN−, N3−, ClO4−, and NO3− to an α-cyclodextrin (α-CD) solution in D2O caused marked downfield shifts in the 1H NMR signal of the C(5)–H located in the interior of the α-CD cavity, whereas the signal showed no or only small upfield shifts upon the addition of alkali salts of antichaotropic anions such as F−, HCO3−, H2PO4−, HPO42−, and SO42−. The effects of the inorganic salts on the chemical shifts (δ) for the other protons of α-CD were significant but smaller than that on δ for C(5)–H. These facts indicate that the chaotropic anions are included within the α-CD cavity and held in the vicinity of C(5)–H. Similar, but smaller, effects of the inorganic salts were observed for β- and γ-CD. The binding constants and thermodynamic parameters determined for complexation of CD’s with some chaotropic anions suggest that hydrophobic and van der Waals interactions, as well as a conformational change of CD macrocycles and the desolvation of CD’s and/or the anions upon complexation, play important roles in complex stabilization. The effect of inorganic salts on the spin-lattice relaxation times of α-CD protons also supports the above conclusion.
収録刊行物
-
- Bulletin of the Chemical Society of Japan
-
Bulletin of the Chemical Society of Japan 70 (3), 535-541, 1997
公益社団法人 日本化学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282679097600000
-
- NII論文ID
- 130004149750
- 10008916464
-
- NII書誌ID
- AA00580132
-
- ISSN
- 13480634
- 00092673
-
- NDL書誌ID
- 4196792
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可