Dynamics of hydrogen bromide dissolution in the ground and excited states

被引:102
作者
Hurley, SM
Dermota, TE
Hydutsky, DP
Castleman, AW [1 ]
机构
[1] Penn State Univ, Dept Chem, University Pk, PA 16802 USA
[2] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
关键词
D O I
10.1126/science.1075307
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The dissolution of acids is one of the most fundamental solvation processes, and an important issue is the nature of the hydration complex resulting in ion pair formation. We used femtosecond pump-probe spectroscopy to show that five water molecules are necessary for complete dissolution of a hydrogen bromide molecule to form the contact ion pair H+.Br-(H2O)(n) in the electronic ground state. In smaller mixed clusters (n < 5), the ion pair formation can be photoinduced by electronic excitation.
引用
收藏
页码:202 / 204
页数:4
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