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。
Reactions of CO2 +, CO2CO2 + and H2O+ ions with various neutral molecules
作者:Asit B. Rakshit、Peter Warneck
DOI:10.1039/f29807601084
日期:——
A drift chamber mass spectrometer apparatus was used to determine products and rate coefficients at 300 K for reactions of CO2+, CO2CO2+ and H2O+ with H2, CH4, SO2, O2, C2H2, C2H4, COS, CS2, NH3, NO2 and NO. Charge transfer is the predominant reaction channel in most cases. Reaction efficiencies are discussed by comparison with rate coefficients calculated from the capture mechanism according to averaged
使用漂移室质谱仪设备确定在300 K下CO 2 +,CO 2 CO 2 +和H 2 O +与H 2,CH 4,SO 2,O 2,C 2 H反应的产物和速率系数2,C 2 H 4,COS,CS 2,NH 3,NO 2和不。在大多数情况下,电荷转移是主要的反应通道。通过与根据平均偶极子定向理论从捕获机制计算出的速率系数进行比较,讨论了反应效率。
Reactions of OH+ and H2O+ ions with some diatomic and simple polyatomic molecules
作者:Z. Karpas、W.T. Huntress
DOI:10.1016/0009-2614(78)85621-8
日期:1978.11
constants and product distributions of the reactions of OH+ and H2O+ with some diatomic and simple polyatomic molecules were studied by ion cyclotron resonance (ICR) mass spectrometric techniques. Reaction rates with CO, NO, O2, N2, CO2, H2S, N2O, H2CO, CH4 and CD4 were measured. Charge transfer and proton transfer were generally observed in cases for which the reaction channel is exothermic, but processes
The rateconstants of several H2O+ reactions have been measured as a function of relative kineticenergy in a flow-drifttube. The reactions were found to proceed in a variety of ways — charge transfer, protontransfer, and H-atom abstraction — and to have only moderate kinetic-energy dependences.
已经测量了数个H 2 O +反应的速率常数,作为流量漂移管中相对动能的函数。发现该反应以多种方式进行-电荷转移,质子转移和H原子抽象-并且仅具有中等的动能依赖性。
High-resolution laser photofragment spectroscopy of the c 1Π-b 1Σ+ system of OH+
作者:David J. Rodgers、Peter J. Sarre
DOI:10.1016/0009-2614(88)87373-1
日期:1988.1
The first observation of transitions in the c 1Π-b 1Σ+ system of the OH+ molecule has been achieved by fast-ion-beam laser photofragment spectroscopy. The spectrum was recorded by the detection of O+ ions which arise from predissociation of the c 1Πstate. The assignment of P, Q and R branches of the 3-0 band is described and molecular parameters for these two vibrational levels are reported. The rotational