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Chemical communications (Cambridge, England)

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


PMID 25190568

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.

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554030
4,5-Dicyanoimidazole, 99.0%
C5H2N4