Related Experiment Video
Updated: Jun 8, 2026

One-pot Microwave-assisted Conversion of Anomeric Nitrate-esters to Trichloroacetimidates
Published on: January 15, 2018
IR fingerprints of U(VI) nitrate monoamides complexes: a joint experimental and theoretical study
Antonio Prestianni1, Laurent Joubert, Alexandre Chagnes
1Laboratoire d'Electrochimie, Chimie des Interface et Modélisation pour l'Energie (UMR 7575), Ecole Nationale Supérieure de Chimie de Paris (Chimie Paristech), 11 rue Pierre et Marie Curie, F-75231 Paris Cedex 05, France.
Abstract:
Infrared spectra of 0.5 mol·L(-1) uranium(VI) nitrate monoamide complexes in toluene have been recorded and compared with infrared spectra calculated by DFT. The investigated monoamides were N,N-dimethylformamide (DMF), N,N-dibutylformamide (DBF), and N,N-dicyclohexylformamide (DcHF). The validity of DFT calculations for describing uranium nitrate monoamide complexes has been confirmed as a fair agreement between experimental and calculated spectra was obtained. Furthermore, a topological analysis of the electron density has been carried out to characterize monoamide-uranium interactions. From this work, it appears that the increase of stability of uranylmonoamide complexes may be directly linked to the degree of polarization of the ligands in interaction with uranylnitrate. Among the investigated monoamides, the most stable complex is UO(2)(NO(3))(2)·2DcHF. This complex is characterized by a high positive charge delocalization in the outer part of the ligand molecule, which leads to a more concentrated positive charge close to the uranyl cation (UO(2)(2+)), thus strengthening the electrostatic interaction between the metal and the ligand.
More Related Videos
Related Concept Videos
Preparation of 1° Amines: Hofmann and Curtius Rearrangement Mechanism
2° Amines to N-Nitrosamines: Reaction with NaNO2
IR and UV–Vis Spectroscopy of Aldehydes and Ketones
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent of conjugation in the...
Preparation of Amines: Reduction of Oximes and Nitro Compounds
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism

