期刊
SCIENCE
卷 350, 期 6256, 页码 78-82出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aab3908
关键词
-
资金
- U.S. Department of Energy [DE-SC0011456, DE-SC0014305]
- Deutscher Akademischer Austauschdienst
- Natural Sciences and Engineering Research Council of Canada
- U.S. Department of Energy (DOE) [DE-SC0011456, DE-SC0014305] Funding Source: U.S. Department of Energy (DOE)
Despite decades of study, the structures adopted to accommodate an excess proton in water and the mechanism by which they interconvert remain elusive. We used ultrafast two-dimensional infrared (2D IR) spectroscopy to investigate protons in aqueous hydrochloric acid solutions. By exciting O-H stretching vibrations and detecting the spectral response throughout the mid-IR region, we observed the interaction between the stretching and bending vibrations characteristic of the flanking waters of the Zundel complex, [H(H2O)(2)](+), at 3200 and 1760 cm(-1), respectively. From time-dependent shifts of the stretch-bend cross peak, we determined a lower limit on the lifetime of this complex of 480 femtoseconds. These results suggest a key role for the Zundel complex in aqueous proton transfer.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据