Gorden R, Sieck L W
Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234.
J Res Natl Bur Stand A Phys Chem. 1972 Nov-Dec;76A(6):655-659. doi: 10.6028/jres.076A.057.
The photoionization of isopropanol (-PrOH) at 11.7 eV has been investigated in the NBS high pressure photoionization mass spectrometer over the pressure range 0.1 to approximately 200 millitorr. The major primary ion, CHCHOH, reacts with a total rate coefficient of 1.1 ±0.1× 10 cm/mole-cule-s to yield mainly (-PrOH)H and CH(-C3 H)COH. At pressures in excess of a few millitorr consecutive reactions of (-PrOH)H and CH(-CH7)COH were also detected, including the overall dehydration process These data are interpreted in light of a recent radiolysis study, and a thermal cationic chain mechanism for production of (-CH)O consistent with those results is proposed. The value for the proton affinity of SF is also discussed in some detail.
在国家标准局（NBS）的高压光电离质谱仪中，研究了在0.1至约200毫托的压力范围内，11.7电子伏特能量下异丙醇（-PrOH）的光电离情况。主要的初级离子CHCHOH，以1.1±0.1×10厘米/（分子·秒）的总速率系数发生反应，主要生成（-PrOH）H和CH（-C3H）COH。在压力超过几毫托时，还检测到了（-PrOH）H和CH（-CH7）COH的连续反应，包括整体脱水过程。根据最近的辐射分解研究对这些数据进行了解释，并提出了一种与这些结果一致的用于生成（-CH）O的热阳离子链机制。还对SF的质子亲和能值进行了较为详细的讨论。
