Ion chemistry of sulfuryl fluoride: An experimental and theoretical study on gas-phase reactions involving neutral and ionized SO2F2
作者:Paola Antoniotti、Paola Benzi、Lorenza Operti、Roberto Rabezzana、Stefano Borocci、Maria Giordani、Felice Grandinetti
DOI:10.1016/j.ijms.2013.06.001
日期:2013.11
molecular SO 2 F 2 + ion, whose capability of activating strong H X bonds (X = C, N, O) is ascribable to the high spin density located on the oxygen atoms, in line with literature reports. Among the ions produced by electron ionization of SO 2 F 2 , the FSO x + ( x = 0–2) ions are capable of activating the H NH 2 bond of ammonia. Theoretical investigation revealed that NH 3 activation by SF + requires
摘要 通过离子阱质谱和从头计算研究了硫酰氟的气相离子化学。大气相关离子与中性 SO 2 F 2 的反应主要通过解离电子转移导致 SO 2 F 2 消耗。在少数情况下,会调用涉及 F-抽象的不同反应机制,因为尽管电子转移通道是吸热的,但仍观察到离解离子产物。从头算计算揭示了分子 SO 2 F 2 + 离子的近乎完美的失谐结构,其激活强 HX 键 (X = C, N, O) 的能力归因于位于氧原子上的高自旋密度,直线与文献报道。在 SO 2 F 2 电子电离产生的离子中,FSO x + ( x = 0–2) 离子能够激活氨的 H NH 2 键。理论研究表明,SF + 对NH 3 的活化需要沿反应途径进行三线态到单线态的转化。这种转化预计会很快,可以想象的反应速率决定步骤是随后的分子内氢迁移。