1986/09/01 by Thomas M. Miller, Doreen G. Leopold, Kermit K. Murray +1 · 1 citation
Physics and Astronomy · Chemistry · #Advanced Chemical Physics Studies #Spectroscopy and Quantum Chemical Studies #Photochemistry and Electron Transfer Studies #Alkali metal #Affinities #Electron affinity (data page) #Halide #Chemistry #Polarizability #Ion #Dissociation (chemistry) #Electron #Crystallography #Bond-dissociation energy #Electronegativity #Inorganic chemistry #Computational chemistry #Physical chemistry #Stereochemistry #Molecule #Organic chemistry
paper · doi:10.1063/1.451091
openalex publication_date 1986/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Photoelectron spectra are reported for the MX (X̃ 1Σ+)+e−←MX−(X̃ 2Σ+) transitions of ten alkali halide anions at 488 nm. Adiabatic electron affinities (±0.010 eV) are determined to be 0.593 (LiCl), 0.520 (NaF), 0.727 (NaCl), 0.788 (NaBr), 0.865 (NaI), 0.582 (KCl), 0.642 (KBr), 0.728 (KI), 0.543 (RbCl), and 0.455 eV (CsCl). Fundamental vibrational frequencies, equilibrium bond lengths, and dissociation energies are also reported for the anion 2Σ+ ground states. An observed linear correlation of electron affinities with α/r2 (α=metal atom polarizability) is used to predict the electron affinities of the remaining alkali bromides and iodides, as well as related alkali salts. A simple electrostatic model for the alkali halide anions is also presented which enables the accurate (±0.1 eV) calculation of electron affinities.