Conspectus Nonvalence bound states (NBS) are anionic states where the excess electron is
extremely loosely bound to the neutral core through long-range potentials. In contrast to the …

Molecular anions with polar neutral cores can support highly diffuse dipole-bound states
below their detachment thresholds due to the long-range charge–dipole interaction. Such …

Although the adiabatic potential energy surfaces defined by the Born-Oppenheimer
approximation are the cornerstones for understanding the electronic structure and …

Valence-bound anions with polar neutral cores can have diffuse dipole-bound excited states
just below the electron detachment threshold. Because of the similarity in geometry and …

We report an investigation of the 1-pyrenolate anion (PyO−) and the 1-pyrenoxy radical
(PyO) using photodetachment spectroscopy and resonant photoelectron imaging of …

Valence-bound anions with a dipolar core can support dipole-bound states (DBSs) below
the electron detachment threshold. The highly diffuse DBS observed is usually of σ …

High-resolution photoelectron imaging and photodetachment spectroscopy of cryogenically
cooled pyrrolide and imidazolide anions are used to probe the electronic structure and …

We report the observation of a symmetry-forbidden excited quadrupole-bound state (QBS) in
the tetracyanobenzene anion (TCNB–) using both photoelectron and photodetachment …

Negative ions do not possess Rydberg states but can have Rydberg-like nonvalence excited
states near the electron detachment threshold, including dipole-bound states (DBSs) and …

Evidence of strong photoelectron–valence electron (PEVE) interactions has been observed
in the anion photoelectron (PE) spectra of several lanthanide suboxide clusters, which are …