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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Le Bel-van't Hoff rule ： ウィキペディア英語版 Le Bel-van't Hoff rule Le Bel-van't Hoff rule states that the number of stereoisomers of an organic compound containing no internal planes of symmetry is 2n, where n represents the number of asymmetric carbon atoms. Joseph Achille Le Bel and Jacobus Henricus van 't Hoff both announced this hypothesis in 1874 and that this accounted for all molecular asymmetry known at the time.〔(【引用サイトリンク】url=http://medical-dictionary.thefreedictionary.com/Le+Bel-van't+Hoff+rule )〕 As an example, four of the carbon atoms of the aldohexose class of molecules are asymmetric, therefore the Le Bel-van't Hoff rule gives a calculation of 24=16 stereoisomers. This is indeed the case: these chemicals are two enantiomers each of eight different diastereomers: allose, altrose, glucose, mannose, gulose, idose, galactose, and talose. : ==References== 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「Le Bel-van't Hoff rule」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.