The hunt for HCO(aq)
The hunt for HCO(aq)
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DOI：
10.1039/b924902h
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发表时间：
2010-01-01
影响因子：
3.3
通讯作者：
Thogersen, Jan
中科院分区：
文献类型：
--
作者：
Jensen, Svend Knak;Keiding, Soren Rud;Thogersen, Jan
与其在气相反应中的强烈存在相反，甲酰基自由基HCO从未在水溶液中被发现。在这里的光解水甲酸根阴离子，HCOO（-）（水溶液），以下的（n π *）跃迁在200 nm处的激发研究红外飞秒瞬态吸收光谱的目的是确定水甲酰自由基的光产物，HCO（水溶液）。然而，未观察到HCO（aq）。实验表明，HCO（aq）在与周围的水分子反应之前存在不到1皮秒。
In contrast to its strong presence in gas-phase reactions, the formyl radical, HCO, has never been identified in aqueous solution. Here the photolysis of aqueous formate anions, HCOO(-)(aq), following the excitation of the (n pi*) transition at 200 nm is studied by infrared femtosecond transient absorption spectroscopy with the purpose of identifying the aqueous formyl radical photoproduct, HCO(aq). However, HCO(aq) is not observed. The experiments indicate that HCO(aq) exists for less than one picosecond before it reacts with the surrounding water molecules.