Acid-Base Catalyzed Reactions in Ionic Water Clusters

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• 作者：Uwe Achatz ; Stefan Joos ; Christian Berg ; Thomas Schindler ; Martin Beyer ; Gerhard Albert ; Gereon Niedner-Schatteburg ; and Vladimir E. Bondybey
• 刊名：Journal of the American Chemical Society
• 出版年：1998
• 出版时间：March 4, 1998
• 年：1998
• 卷：120
• 期：8
• 页码：1876 - 1882
• 全文大小：99K
• 年卷期：v.120,no.8(March 4, 1998)
• ISSN：1520-5126

文摘

Fourier Transform-Ion Cyclotron Resonance (FT-ICR) massspectrometric studies of both cationicwater clustersH⁺(H₂O)_n,n = 1-70, and anionic water clustersX^-(H₂O)_n,n = 1-30, X = OH, O, withacetone and acetaldehyde are reported. For the cations a sequenceof ligand exchange and fragmentationreactions results in "solvated proton" complex ion final products.In the anionicOH^-(H₂O)_nclusters, on theother hand, an OH^- catalyzed aldol addition of thecarbonyl compounds with a true covalent bond formationis observed. The anionic and cationic water clusters thus behavesimilar to basic and acidic aqueous solutions.