翻訳と辞書 Words near each other ・ Cryptachaea veruculata ・ Cryptaciura ・ Cryptacize ・ Cryptadapis ・ Cryptadelphia ・ Cryptadia ・ Cryptagama ・ Cryptal Darkness ・ Cryptamorpha ・ Cryptanaerobacter ・ Cryptanaerobacter phenolicus ・ Cryptanalysis ・ Cryptanalysis of the Enigma ・ Cryptanalysis of the Lorenz cipher ・ Cryptanalytic computer ・ Cryptand ・ Cryptandra ・ Cryptandra arbutiflora ・ Cryptandra tomentosa ・ Cryptandromyces ・ Cryptantha ・ Cryptantha affinis ・ Cryptantha ambigua ・ Cryptantha angustifolia ・ Cryptantha cinerea ・ Cryptantha circumscissa ・ Cryptantha clevelandii ・ Cryptantha confertiflora ・ Cryptantha crassipes ・ Cryptantha crassisepala Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Cryptand ： ウィキペディア英語版 Cryptand Cryptands are a family of synthetic bi- and polycyclic multidentate ligands for a variety of cations.〔von Zelewsky, A. ''Stereochemistry of Coordination Compounds''; John Wiley: Chichester, 1995. ISBN 0-471-95057-2.〕 The Nobel Prize for Chemistry in 1987 was given to Donald J. Cram, Jean-Marie Lehn, and Charles J. Pedersen for their efforts in discovering and determining uses of cryptands and crown ethers, thus launching the now flourishing field of supramolecular chemistry.〔Lehn, J. M. ''Supramolecular Chemistry: Concepts and Perspectives''; VCH: Weinhiem, 1995.〕 The term cryptand implies that this ligand binds substrates in a crypt, interring the guest as in a burial. These molecules are three-dimensional analogues of crown ethers but are more selective and complex the guest ions more strongly. The resulting complexes are lipophilic. ==Structure== The most common and most important cryptand is N()3N; the formal IUPAC (International Union of Pure and Applied Chemistry) name for this compound is 1,10-diaza-4,7,13,16,21,24-hexaoxabicyclo()hexacosane. This compound is termed ()cryptand where the numbers indicate the number of ether oxygen atoms (and hence binding sites) in each of the three bridges between the amine nitrogen "caps". Many cryptands are commercially available under the tradename "Kryptofix." All-amine cryptands exhibit particularly high affinity for alkali metal cations, which has allowed the isolation of salts of K+. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cryptand」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.