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Updated: Apr 26, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Anion recognition by uranyl-salophen derivatives as probed by infrared multiple photon dissociation spectroscopy and
Enrico Bodo1, Alessandra Ciavardini, Antonella Dalla Cort
1Dipartimento di Chimica, Università di Roma "La Sapienza", P.le A. Moro 5, 00185 Rome (Italy).
Abstract:
The vibrational features and molecular structures of complexes formed by a series of uranyl-salophen receptors with simple anions, such as Cl(-) , H(-) , and HCOO(-) , have been investigated in the gas phase. Spectra of the anionic complexes were studied in the $\tilde \nu $=800-1800 cm(-1) range by mass-selective infrared multiple photon dissociation (IRMPD) spectroscopy with a continuously tunable free-electron laser. The gas-phase decarboxylation of the formate adducts produces uranyl-salophen monohydride anions, which have been characterized for the first time and reveal a strong UH bond, the nature of which has been elucidated theoretically. The spectra are in excellent agreement with the results obtained from high-quality ab initio calculations, which provided the structure and binding features of the anion-receptor complexes.
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