@article{14276,
  keywords = {Raman},
  author = {Eric Faulques and Richard E Russo and Dale L Perry},
  title = {Raman spectral studies of uranyl sulfate and its urea complex structural isomers},
  abstract = {<p>Using Raman spectroscopy, the authors have studied two forms of the dioxouranium(VI) sulphate complexes of the urea molecule, the bis(urea)dioxouranium(VI) sulphates α- and β-UO<sub>2</sub>SO<sub>4</sub>{\textperiodcentered}2CO(NH<sub>2</sub>)<sub>2</sub>. Raman spectra were recorded using λ = 488 and 647.1 nm laser excitation lines. For λ = 448 nm, the crystals exhibit strong, structured luminescence, with peaks separated by 857 cm<sup>-1</sup> (α-form) and 853 cm<sup>-1</sup> (β-form). For λ = 647.1 nm, very intense Raman spectra are obtained which are similar but slightly different and can be used to distinguish each form. A comparison with the urea and uranyl sulphate hydrate (USH) spectra has clarified the Raman band assignment of the two parent α- and β forms. Contributions of the urea donor ligand and the sulphate have been identified. Charge transfer to uranium and the uranium{\textemdash}oxygen force constant in the uranyl ion have been evaluated. The results agree with previous X-ray structural investigations.</p>},
  year = {1993},
  booktitle = {Spectrochimica Acta Part A: Molecular Spectroscopy},
  journal = {Spectrochimica Acta Part A: Molecular Spectroscopy},
  series = {Spectrochimica Acta Part A: Molecular Spectroscopy},
  volume = {49},
  pages = {975-983},
  month = {07/1993},
  doi = {10.1016/0584-8539(93)80216-W},
  language = {eng},
}