翻訳と辞書 Words near each other ・ Sulfate aerosol ・ Sulfate attack in concrete and mortar ・ Sulfate conjugate ・ Sulfate crust ・ Sulfate minerals ・ Sulfate-reducing bacteria ・ Sulfate-transporting ATPase ・ Sulfathiazole ・ Sulfathiourea ・ Sulfatide ・ Sulfatidosis ・ Sulfation ・ Sulfatolamide ・ Sulfenamide ・ Sulfene ・ Sulfenic acid ・ Sulfentrazone ・ Sulfenyl chloride ・ Sulfhemoglobinemia ・ Sulfhydrogenase ・ Sulfidation ・ Sulfide ・ Sulfide minerals ・ Sulfide stress cracking ・ Sulfide-cytochrome-c reductase (flavocytochrome c) ・ Sulfido ・ Sulfilimine ・ Sulfina Barbu ・ Sulfinalol ・ Sulfinamide 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 Sulfenic acid ： ウィキペディア英語版 Sulfenic acid A sulfenic acid is an organosulfur compound and oxoacid with the general formula RSOH, where R ≠ H. It is the first member of the family of organosulfur oxoacids, which also include sulfinic acids and sulfonic acids, RSO2H and RSO3H, respectively. ==Properties== In contrast to sulfinic and sulfonic acids, simple sulfenic acids, such as methanesulfenic acid, CH3SOH, are highly reactive and cannot be isolated in solution. In the gas phase the lifetime of methanesulfenic acid is about one minute. The gas phase structure of methanesulfenic acid was found by microwave spectroscopy (rotational spectroscopy) to be CH3–S–O–H. Sulfenic acids can be stabilized through steric effects, which prevent the sulfenic acid from condensing with itself to form thiosulfinates, RS(O)SR, such as allicin from garlic. Through the use of X-ray crystallography, the structure of such stabilized sulfenic acids were shown to be R–S–O–H. The stable, sterically hindered sulfenic acid, 1-triptycenesulfenic acid, has been found to have a pKa of 12.5 and an O–H bond-dissociation energy (bde) of 71.9 ± 0.3 kcal/mol, which can be compared to a pKa of ≥14 and O–H BDE of ∼88 kcal/mol for the (valence) isoelectronic hydroperoxides, ROOH. 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「Sulfenic acid」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.