Chemical Communications 2014-06-01

Structural clues to UO₂²⁺/VO₂⁺ competition in seawater extraction using amidoxime-based extractants.

Linna Wang, Dan Li, Yang Liu, Yuan Wang, Jinfeng Cui, Airong Cui, Wenxin Wu

Index: Chem. Commun. (Camb.) 50(83) , 12504-7, (2014)

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Abstract

Here we present the first structural comparison of amidoxime complexes of UO2(2+) and VO2(+) (the main competitor in the extraction of uranium from seawater using amidoxime-based sorbents) using a 4,5-di(amidoxime)-functionalized imidazole ligand. The amidoxime groups resist tautomerization in both cases and quite different coordination modes (chelating vs. bridging) are observed.