Lengyel Jozef, Ončák Milan, Herburger Andreas, van der Linde Christian, Beyer Martin K
Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria.
Phys Chem Chem Phys. 2017 Sep 27;19(37):25346-25351. doi: 10.1039/c7cp04577h.
We present infrared multiple photon dissociation (IRMPD) spectra of (HO)O˙ and (HO)OH cluster ensembles for n[combining macron] ≈ 8 and 47 in the range of 2400-4000 cm. Both hydrated ions exhibit the same spectral features, in good agreement with theoretical calculations. Decomposition of the calculated spectra shows that bands originating from HOO˙ and HOOH interactions span almost the whole spectral region of interest. Experimentally, evaporation of OH˙ is observed to a small extent, which requires interconversion of (HO)O˙ into (HO)OH˙OH, with subsequent HO evaporation preferred over OH˙ evaporation. The modeling shows that (HO)O˙ and (HO)OH˙OH cannot be distinguished by IRMPD spectroscopy.
我们展示了n≈8和47时,(HO)O˙和(HO)OH团簇集合体在2400 - 4000 cm范围内的红外多光子解离(IRMPD)光谱。两种水合离子都表现出相同的光谱特征,与理论计算结果高度吻合。对计算光谱的分解表明,源自HOO˙和HOOH相互作用的谱带几乎覆盖了整个感兴趣的光谱区域。实验上,观察到有少量OH˙蒸发,这需要(HO)O˙转化为(HO)OH˙OH,随后优先发生HO蒸发而非OH˙蒸发。模型显示,(HO)O˙和(HO)OH˙OH无法通过IRMPD光谱区分。