MHP (CH3OOH ) 和 EHP (CH3CH2OOH ) 的电离精力被方法根据在 6-311+G* 基础的 Koopmans 定理设置了的光谱学(足) 测量和两个 Gaussian-2 (G2 ) 计算和 Hartree-Fock (HF ) 第一次铺平的 HeI 光电子决定了。MHP 和 EHP 的 PE 系列的任务和描述被 G2 和 HF 计算也支持。MHP 和 EHP 的第一个电离精力分别地是 9.87 和 9.65 eV。在空气的 EHP 的更高的溶解度被归因于他们的更低的电离精力价值。
The ionization energies of MHP (CH3OOH) and EHP(CH3CH2OOH) nave been determined by Hel photoelectron spectroscopy (PES) measurement and both Gaussian-2 (G2) calculation and Hartree-Fock (HF) method on the basis of Koopmans theorem at 6.311+G^* basis set level for the first time. The assignment and characterization of PE spectra of MHP and EHP were also supported by the G2 and HF calculations. The first ionization energies of MHP and EHP are 9.87 and 9.65 eV, respectively. Higher solubility of EHP in the atmosphere was attributed to their lower ionization energy values.