Photochemistry of SO<sub>2</sub>/Cl<sub>2</sub>/O<sub>2</sub>Gas Mixtures: Synthesis of the New Peroxide ClSO<sub>2</sub>OOSO<sub>2</sub>Cl
作者:Rosana M. Romano、Carlos O. Della Védova、Helmut Beckers、Helge Willner
DOI:10.1021/ic802143p
日期:2009.3.2
Raman, spectroscopy. At room temperature, the peroxide decomposes to form quantitatively Cl2 and SO3. DFT calculations suggest that ClSO2OOSO2Cl occurs at ambient temperatures in at least two different rotamers, whereas in matrix-isolation experiments in Ar at 15 K only the most stable form has been found. The mechanism of the formation of the peroxide via the ClSO2OO• peroxy radical and the supposed
已在制备规模上研究了在-78°C下Cl 2 / SO 2 / O 2混合物的光化学诱导气相反应。已经获得了硫酰氯ClSO 2(OSO 2)n Cl,n = 0、1或2,以及SO 3和迄今未知的双(氯磺酰)过氧化物ClSO 2 OOSO 2 Cl。新的过氧化物已通过捕集捕集蒸馏进行纯化,并最终通过气相和基质红外光谱以及拉曼光谱进行了表征。在室温下,过氧化物会分解形成定量的Cl 2和SO 3。DFT计算表明,ClSO 2 OOSO 2 Cl至少在两种不同的旋转异构体中在环境温度下发生,而在Ar在15 K的基质分离实验中,仅发现了最稳定的形式。讨论了通过ClSO 2 OO•过氧自由基形成过氧化物的机理以及ClSO 3 •中间体的推测参与。