Mass‐Spectrometric Study of Photoionization. IX. Hydrogen Cyanide and Acetonitrile

Mass‐Spectrometric Study of Photoionization. IX. Hydrogen Cyanide and Acetonitrile
复制标题

氰化氢和乙腈的质谱研究。

DOI:
--
复制
发表时间:
1968
期刊:
影响因子:
--
通讯作者:
Susan K. Liston
Susan K. Liston
中科院分区:
--
文献类型:
--
作者:
V. H. Dibeler;Susan K. Liston

文献摘要

被引文献

相似文献

光电离产率曲线从阈值到600 A的HCN+和CN+离子的HCN和CH 3CN的主要离子。HCN的第一电离能为13.59 eV。CN+离子的阈值允许计算Δ Hf 0 °(CN)= 100 kcal mole−1,D 0(CN)= 182.5 kcal mole−1,D 0(H-CN)= 119.2 kcal mole−1,D 0(NC-CN)= 126.6 kcal mole−1。乙腈中的解离光电离过程不会产生足够丰度的甲基或氰基自由基离子,以直接验证上述内容。尽管如此,CH 3CN的主要光离子的阈值被制成表格,并计算了一些热力学值,包括Δ Hf 0 °(CH 2)= 94 kcal mole−1。
Photoionization yield curves are obtained from threshold to 600 A for the HCN+ and CN+ ions of HCN and for the principal ions of CH3CN. The first ionization energy of HCN is 13.59 eV. The threshold for the CN+ ion permits calculation of ΔHf0°(CN) = 100 kcal mole−1, D0(CN) = 182.5 kcal mole−1, D0(H–CN) = 119.2 kcal mole−1, and D0(NC–CN) = 126.6 kcal mole−1. Dissociative photoionization processes in acetonitrile do not produce methyl or cyanogen radical ions in sufficient abundance for direct verification of the above. Nevertheless, threshold values of the principal photoions of CH3CN are tabulated, and some thermodynamic values are calculated, including ΔHf0°(CH2) = 94 kcal mole−1.