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The relationship of monodentate and bidentate coordinated uranium(VI) sulfate in aqueous solution

(2008) RADIOCHIMICA ACTA. 96(9-11). p.607-611
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Abstract
The coordination of U(VI) sulfate complexes has been investigated by uranium L-III-edge EXAFS and HEXS measurements with the aim to distinguish monodentate and bidentate coordinated sulfate in aqueous solution. UV-vis absorption spectroscopy has been used to differentiate the species and to determine the species distribution as a function of the [SO42-]/[UO22+] ratio. A monodentate coordination prevails in solutions with [SO42-]/[UO22+] ratio of 1, where UO2SO4 is the dominant species. Besides the dominating monodentate sulfate a small amount of bidentate sulfate could be observed, indicating that two isomers may exist for UO2SO4. With increasing [SO42-]/[UO22+] ratio the UP2(SO4)(2)(2-) species becomes the main species. The uranium atom of this species is coordinated by two bidentate Sulfate groups.
Keywords
COMPLEXES, Aqueous solution, SPECTROSCOPY, Uranyl sulfate, UV-vis, HEXS, EXAFS, ION, U(VI), SPECIATION

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Citation

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Chicago
Hennig, C, A Ikeda, K Schmeide, V Brendler, H Moll, S Tsushima, AC Scheinost, et al. 2008. “The Relationship of Monodentate and Bidentate Coordinated uranium(VI) Sulfate in Aqueous Solution.” Radiochimica Acta 96 (9-11): 607–611.
APA
Hennig, C, Ikeda, A., Schmeide, K., Brendler, V., Moll, H., Tsushima, S., Scheinost, A., et al. (2008). The relationship of monodentate and bidentate coordinated uranium(VI) sulfate in aqueous solution. RADIOCHIMICA ACTA, 96(9-11), 607–611. Presented at the 11th International Conference on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere.
Vancouver
1.
Hennig C, Ikeda A, Schmeide K, Brendler V, Moll H, Tsushima S, et al. The relationship of monodentate and bidentate coordinated uranium(VI) sulfate in aqueous solution. RADIOCHIMICA ACTA. 2008;96(9-11):607–11.
MLA
Hennig, C, A Ikeda, K Schmeide, et al. “The Relationship of Monodentate and Bidentate Coordinated uranium(VI) Sulfate in Aqueous Solution.” RADIOCHIMICA ACTA 96.9-11 (2008): 607–611. Print.
@article{1190046,
  abstract     = {The coordination of U(VI) sulfate complexes has been investigated by uranium L-III-edge EXAFS and HEXS measurements with the aim to distinguish monodentate and bidentate coordinated sulfate in aqueous solution. UV-vis absorption spectroscopy has been used to differentiate the species and to determine the species distribution as a function of the [SO42-]/[UO22+] ratio. A monodentate coordination prevails in solutions with [SO42-]/[UO22+] ratio of 1, where UO2SO4 is the dominant species. Besides the dominating monodentate sulfate a small amount of bidentate sulfate could be observed, indicating that two isomers may exist for UO2SO4. With increasing [SO42-]/[UO22+] ratio the UP2(SO4)(2)(2-) species becomes the main species. The uranium atom of this species is coordinated by two bidentate Sulfate groups.},
  author       = {Hennig, C and Ikeda, A and Schmeide, K and Brendler, V and Moll, H and Tsushima, S and Scheinost, AC and Skanthakumar, S and Wilson, R and Soderholm, L and Servaes, K and Gorrler-Walrand, C and Van Deun, Rik},
  issn         = {0033-8230},
  journal      = {RADIOCHIMICA ACTA},
  language     = {eng},
  location     = {Munich, Germany},
  number       = {9-11},
  pages        = {607--611},
  title        = {The relationship of monodentate and bidentate coordinated uranium(VI) sulfate in aqueous solution},
  url          = {http://dx.doi.org/10.1524/ract.2008.1543},
  volume       = {96},
  year         = {2008},
}

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