We have obtained photoelectron spectra for the photodetachment of (NaCl${)}_{\mathit{n}}^{\mathrm{-}}$ (n=1–13) cluster anions that are in excellent, quantitative agreement with our calculated values. These anions have a single excess electron attached to a neutral, ionically bound molecule. Their predicted structures, determined by constant-temperature molecular dynamics and simulated annealing, identify three modes for electron attachment. In most cases, the excess electron significantly deforms the cluster anion away from its neutral geometry.

• Received 21 October 1992

DOI:https://doi.org/10.1103/PhysRevB.47.10040