Sodium microsolvation in ethanol: common features of Na(HO-R)n (R=H, CH3, C2H5) clusters.
Sodium microsolvation in ethanol: common features of Na(HO-R)n (R=H, CH3, C2H5) clusters.
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乙醇中的钠微溶剂化:Na(HO-R)n (R=H、CH3、C2H5)簇的共同特征
DOI:
10.1021/jp110584s
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
T. Zeuch
中科院分区:
文献类型:
--
作者:
R. M. Forck;I. Dauster;U. Buck;T. Zeuch
Ethanol clusters are generated in a continuous He seeded supersonic expansion and doped with sodium atoms in a pick-up cell. By this method clusters of the type Na(C2H5OH)nare formed and characterized by determining size selectively their ionization potentials (IPs) forn= 2−40 in photoionization experiments. A continuous decrease to 3.1 eV is found fromn= 2 to 6 and a constant value of 3.07 ± 0.06 eV forn= 10−40. This IP evolution is similar to the sodium−water and the sodium−methanol system. Quantum chemical calculations (B3LYP and MP2) of the IPs indicate adiabatic contributions to the photoionization process for the cluster sizesn= 4 and 5, which is similar to the sodium−methanol case. The results of the extrapolated IPs and the vertical binding energies (VEBs) of cluster anions are compared with the recently reported VEBs of solvated electrons in liquid water, methanol, and ethanol solutions in the range of 3.1−3.4 eV. The new results imply that the extrapolated VBEs of solvated electrons in anionic clusters match the VBE in liquid water, while they are about 0.5 eV too low for methanol. The influence of the presence of counterions on these findings is discussed.
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影响因子:
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DOI:
10.1063/1.2902970
发表时间:
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期刊:
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影响因子:
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