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Quantum Chemical Rovibrational Analysis of the HOSO Radical

机译:宿血基谱分析

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摘要

syn-HOSO is the most stable form of hydrogenated sulfur dioxide, a possible intermediate in the creation of sulfuric acid. Recent work has characterized the structure and rotational constants, but the present work provides new insights into the vibrational spectra of this molecule. The central S-O bond is weaker than the terminal S-O bond, which allows for near-free rotation of the hydrogen atom. The stretches and the torsional modes are relatively bright infrared emitters/absorbers. The torsional mode is very low in frequency making it a potential target for terahertz observation. The other vibrational frequencies for HOSO are reduced relative to the corresponding frequencies in SO2, H2SO4, and the HOS radical making the infrared features of syn-HOSO likely red-shifted in mixed spectral observation, where oxygen, hydrogen, and sulfur are all found.
机译:Syn-Hoso是最稳定的氢化硫二氧化硫形式,可以在硫酸的产生中中间体。 最近的工作表征了结构和旋转常数,但目前的工作为该分子的振动光谱提供了新的洞察力。 中央S-O键比末端S-O键弱,这允许氢原子的近旋转。 拉伸和扭转模式是相对亮的红外发射器/吸收器。 扭转模式的频率非常低,使其成为太赫兹观察的潜在目标。 相对于SO2,H2SO4的相应频率,HOSO的其他振动频率减小,以及使得Syn-hoso的红外特征在混合光谱观察中,氧气,氢和硫的红外特征。

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