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Speciation of uranyl complexes in ionic liquids by optical spectroscopy

(2007) INORGANIC CHEMISTRY. 46(26). p.11335-11344
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Abstract
Uranyl complexes dissolved in room-temperature ionic liquids have diagnostic absorption and emission spectra which reflect the molecular symmetry and geometry. In particular, the characteristic vibrational fine structure of the absorption spectra allows identification of the molecular symmetry of a uranyl complex. The concept of speciation of. uranyl complexes is illustrated for the hydrated uranyl ion, the tetrachloro complex [UO2Cl4](2-), the trinitrato complex [UO2(NO3)(3)](-), the triacetato complex [UO2(CH3COO)(3)](-) and the crown ether complex [UO2(18-crown-6)](2+) in imidazolium and pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids. The competition between 18- crown-6 and small inorganic ligands for coordination to the uranyl ion was investigated. The crystal structures of the hydrolysis product [(UO2)(2)(mu(2)-OH)(2)(H2O)(6)] [UO2Br4](18-crown-6)(4) and imidazolium salt [C(6)mim](2)[UO2Br4] are described.
Keywords
CHLORO COMPLEXES, NONAQUEOUS SOLVENTS, COORDINATION ENVIRONMENT, MOLECULAR-DYNAMICS, ELECTRONIC-STRUCTURE, MAGNETIC CIRCULAR-DICHROISM, TEMPERATURE MOLTEN-SALTS, URANIUM HALIDE-COMPLEXES, ACTINYL IONS, ANION-EXCHANGE

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Chicago
Nockemann, Peter, Kelly Servaes, Rik Van Deun, Kristof Van Hecke, Luc Van Meervelt, Koen Binnemans, and Christiane Görller-Walrand. 2007. “Speciation of Uranyl Complexes in Ionic Liquids by Optical Spectroscopy.” Inorganic Chemistry 46 (26): 11335–11344.
APA
Nockemann, P., Servaes, K., Van Deun, R., Van Hecke, K., Van Meervelt, L., Binnemans, K., & Görller-Walrand, C. (2007). Speciation of uranyl complexes in ionic liquids by optical spectroscopy. INORGANIC CHEMISTRY, 46(26), 11335–11344.
Vancouver
1.
Nockemann P, Servaes K, Van Deun R, Van Hecke K, Van Meervelt L, Binnemans K, et al. Speciation of uranyl complexes in ionic liquids by optical spectroscopy. INORGANIC CHEMISTRY. 2007;46(26):11335–44.
MLA
Nockemann, Peter, Kelly Servaes, Rik Van Deun, et al. “Speciation of Uranyl Complexes in Ionic Liquids by Optical Spectroscopy.” INORGANIC CHEMISTRY 46.26 (2007): 11335–11344. Print.
@article{1190088,
  abstract     = {Uranyl complexes dissolved in room-temperature ionic liquids have diagnostic absorption and emission spectra which reflect the molecular symmetry and geometry. In particular, the characteristic vibrational fine structure of the absorption spectra allows identification of the molecular symmetry of a uranyl complex. The concept of speciation of. uranyl complexes is illustrated for the hydrated uranyl ion, the tetrachloro complex [UO2Cl4](2-), the trinitrato complex [UO2(NO3)(3)](-), the triacetato complex [UO2(CH3COO)(3)](-) and the crown ether complex [UO2(18-crown-6)](2+) in imidazolium and pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids. The competition between 18- crown-6 and small inorganic ligands for coordination to the uranyl ion was investigated. The crystal structures of the hydrolysis product [(UO2)(2)(mu(2)-OH)(2)(H2O)(6)] [UO2Br4](18-crown-6)(4) and imidazolium salt [C(6)mim](2)[UO2Br4] are described.},
  author       = {Nockemann, Peter and Servaes, Kelly and Van Deun, Rik and Van Hecke, Kristof and Van Meervelt, Luc and Binnemans, Koen and G{\"o}rller-Walrand, Christiane},
  issn         = {0020-1669},
  journal      = {INORGANIC CHEMISTRY},
  keyword      = {CHLORO COMPLEXES,NONAQUEOUS SOLVENTS,COORDINATION ENVIRONMENT,MOLECULAR-DYNAMICS,ELECTRONIC-STRUCTURE,MAGNETIC CIRCULAR-DICHROISM,TEMPERATURE MOLTEN-SALTS,URANIUM HALIDE-COMPLEXES,ACTINYL IONS,ANION-EXCHANGE},
  language     = {eng},
  number       = {26},
  pages        = {11335--11344},
  title        = {Speciation of uranyl complexes in ionic liquids by optical spectroscopy},
  url          = {http://dx.doi.org/10.1021/ic701752j},
  volume       = {46},
  year         = {2007},
}

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