%ALiu, Gaoxiang%ALiu, Gaoxiang [Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA]%ACiborowski, Sandra%ACiborowski, Sandra [Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA]%AGraham, Jacob%AGraham, Jacob [Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA]%ABuytendyk, Allyson [Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA]%ABuytendyk, Allyson%ABowen, Kit%ABowen, Kit [Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA]%BJournal Name: The Journal of Chemical Physics; Journal Volume: 153; Journal Issue: 4; Related Information: CHORUS Timestamp: 2023-08-08 01:39:58 %D2020%IAmerican Institute of Physics %JJournal Name: The Journal of Chemical Physics; Journal Volume: 153; Journal Issue: 4; Related Information: CHORUS Timestamp: 2023-08-08 01:39:58 %K %MOSTI ID: 10176894 %PMedium: X %TPhotoelectron spectroscopic study of dipole-bound and valence-bound nitromethane anions formed by Rydberg electron transfer %X

Close-lying dipole-bound and valence-bound states in the nitromethane anion make this molecule an ideal system for studying the coupling between these two electronically different states. In this work, dipole-bound and valence-bound nitromethane anions were generated by Rydberg electron transfer and characterized by anion photoelectron spectroscopy. The presence of the dipole-bound state was demonstrated through its photoelectron spectral signature, i.e., a single narrow peak at very low electron binding energy, its strong Rydberg quantum number, n*, dependence, and its relatively large anisotropy parameter, β. This work goes the furthest yet in supporting the doorway model of electron attachment to polar molecules.

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