The Aqueous Proton Is Hydrated by More Than One Water Molecule: Is the Hydronium Ion a Useful Conceit?

The Aqueous Proton Is Hydrated by More Than One Water Molecule: Is the Hydronium Ion a Useful Conceit?
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水质子被多个水分子水合:水合氢离子是一种有用的想法吗?

DOI:
10.1021/ed400559t
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发表时间:
2014
影响因子:
3
通讯作者:
T. Silverstein
T. Silverstein
中科院分区:
化学2区
文献类型:
--
作者:
T. Silverstein

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一段时间以来,关于在化学方程式中表示水相质子的最佳方法一直存在分歧。最近的研究结果表明,虽然水合氢离子h30 +可能作为一个参与者存在于某些动力学机制中,但水合质子的热力学基态结构实际上是六水化合物H+·(H2O)6或H13O6+。我们在这里报告这场争论的简短历史和最近光谱结果的简要总结。最后,我们认为,在低年级大学和高中化学课程中研究的绝大多数反应中,用H+(aq)而不是h30 +(aq)来描述水合质子更合适。
For some time now, there has been disagreement concerning the best way to denote the aqueous proton in chemical equations. Recent results have shown that although the hydronium ion, H3O+, may exist as a participant in some kinetic mechanisms, the thermodynamic ground-state structure for the hydrated proton is actually the hexahydrate, H+·(H2O)6, or H13O6+. We report here a short history of this debate and a brief summary of the recent spectroscopic results. Finally, we argue that in the overwhelming majority of reactions studied in lower-division college and high school chemistry courses, it is preferable to use H+(aq) rather than H3O+(aq) to depict the hydrated proton.
DOI: 10.1021/ja9101826
发表时间: 2010-02-10
影响因子: 15
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