Abstract
UV photoelectron spectra of N,N-diphenyl-N′-picrylhydrazine (DPPH 2) have been measured in the solid and gas phases. The solid-state spectra depend on the preparation conditions of the evaporated films and differ from the gas-phase spectrum. Comparison of the observed spectra with the results of theoretical calculations indicates that the electronic structure of this molecule is modified in the solid state by a change in the molecular conformation.
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