Structure of the UO22+-SO42- Ion Pair in Aqueous Solution

J. Neuefeind, S. Skanthakumar, L. Soderholm

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

The structure of the ion pairs formed in aqueous uranyl sulfate solutions has been investigated with high-energy X-ray scattering. Sulfate binds to the uranyl as a monodentate ligand in equimolar solutions. The geometry of the ion pair is very similar to configurations found in crystalline structures; in particular, the U-O-S angle is bent in solution as well as in the solid state. It can therefore be concluded that an U-O-S angle of 143° is an intrinsic property of the uranyl sulfate bond and not due to packing effects or interaction with the water in the primary solvation shell.

Original languageEnglish
Pages (from-to)2422-2426
Number of pages5
JournalInorganic Chemistry
Volume43
Issue number7
DOIs
StatePublished - Apr 5 2004
Externally publishedYes

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