Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA.
J Chem Phys. 2019 Sep 14;151(10):101101. doi: 10.1063/1.5114617.
Using a combination of Rydberg electron transfer and negative ion photoelectron spectroscopy, we revisited an earlier study which, based on several separate pieces of evidence, had concluded that trans- and gauche-succinonitrile can form quadrupole bound anions (QBAs) and dipole bound anions (DBAs), respectively. In the present work, succinonitrile anions were formed by Rydberg electron transfer and interrogated by negative ion photoelectron spectroscopy. The resulting anion photoelectron spectra exhibited distinctive spectral features for both QBA and DBA species in the same spectrum, thereby providing direct spectroscopic confirmation of previous indirect conclusions. Just as importantly, this work also introduces the integrated combination of Rydberg electron transfer and anion photoelectron spectroscopy as a powerful, tandem technique for studying diffuse excess electron states.
利用里德堡电子转移和负离子光电电子能谱的组合，我们重新研究了一项早期的研究，该研究基于几项独立的证据，得出结论认为反式和顺式琥珀腈分别可以形成四极束缚负离子（QBAs）和偶极束缚负离子（DBAs）。在本工作中，通过里德堡电子转移形成琥珀腈阴离子，并通过负离子光电电子能谱进行检测。所得阴离子光电电子能谱在同一光谱中显示出 QBA 和 DBA 物种的独特光谱特征，从而直接证实了先前的间接结论。同样重要的是，这项工作还介绍了里德堡电子转移和负离子光电电子能谱的集成组合，作为研究弥散过剩电子态的强大串联技术。
