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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Van Der Waals versus Hydrogen-Bonding in Complexes of Indole with Argon, Water, and Benzene by Mass-Analyzed Pulsed Field Threshold Ionization
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Van Der Waals versus Hydrogen-Bonding in Complexes of Indole with Argon, Water, and Benzene by Mass-Analyzed Pulsed Field Threshold Ionization

机译：质谱分析脉冲场阈值电离对范德瓦尔斯与吲哚与氩，水和苯的配合物中的氢键结合

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摘要

By using the technique of mass-analyzed threshold ionization spectroscopy, we were able to measure ionization energies of indole-Ar (62505 cm↑(-10)), indole-H↓(2)O (59433 cm↑(-1)), and the indole-benzene (59833 cm↓(-1)) complexes, as well as their dissociation energies in the cationic ground state. The dissociation energies in the neutral ground state are calculated from the experimental data. The ionic E0 = 537 ± 10 cm↑(-1) and neutral dissociation energy Do = 451 ± 15 ↑(-1) of the indole-Ar complex are much smaller than those of the indole-H↓(2)O complex; E0 = 4790 ± 10 cm↑(-1), D↓(0)= 1632 ± 15 cm↑(-1) and of the indole-C↓(6)H↓(6) complex: E0 = 4581 ± 10 cm↑(-1), D↓(0) = 1823 ± 15 cm↑(-1). This demonstrates the van der Waals character of the indole-Ar complex and the hydrogen bonding type in indole-water. Furthermore, we conclude that the indole-benzene complex is hydrogen-bonded with the benzene π-cloud serving as electron donator and indole serving as hydrogen donator.
机译：通过使用质量分析阈值电离光谱技术，我们能够测量吲哚-Ar（62505 cm↑（-10）），吲哚-H↓（2）O（59433 cm↑（-1））的电离能，以及吲哚-苯（59833 cm↓（-1））配合物，以及它们在阳离子基态下的离解能。根据实验数据计算出中性基态的离解能。吲哚-Ar配合物的离子E0 = 537±10 cm↑（-1）和中性离解能Do = 451±15↑（-1）比吲哚-H↓（2）O配合物小得多; E0 = 4790±10 cm↑（-1），D↓（0）= 1632±15 cm↑（-1）和吲哚-C↓（6）H↓（6）络合物：E0 = 4581±10 cm ↑（-1），D↓（0）= 1823±15厘米↑（-1）。这证明了吲哚-Ar配合物的范德华特征和吲哚-水中的氢键类型。此外，我们得出结论，吲哚-苯配合物与苯π-云作为电子供体，而吲哚作为氢供体氢键合。

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