Issue 40, 2014

Structural and electrochemical characterization of a cerium(iv) hydroxamate complex: implications for the beneficiation of light rare earth ores

Abstract

Reaction of N-phenyl-pivalohydroxamic acid with CeIII precursors leads to a homoleptic hydroxamate complex: CeIV[tBuC(O)N(O)Ph]4. Electrochemical experiments indicate a significant stabilization of the CeIV cation at Ep,c = −1.20 V versus SCE in the hydroxamate ligand framework. The spontaneous oxidation of CeIII in a hydroxamate ligand field is discussed in the context of beneficiation of the light rare earths from the fluorocarbonate mineral bastnäsite.

Graphical abstract: Structural and electrochemical characterization of a cerium(iv) hydroxamate complex: implications for the beneficiation of light rare earth ores

Supplementary files

Article information

Article type
Communication
Submitted
25 Aug 2013
Accepted
19 Oct 2013
First published
22 Oct 2013

Chem. Commun., 2014,50, 5361-5363

Structural and electrochemical characterization of a cerium(IV) hydroxamate complex: implications for the beneficiation of light rare earth ores

H. B. Lee, J. A. Bogart, P. J. Carroll and E. J. Schelter, Chem. Commun., 2014, 50, 5361 DOI: 10.1039/C3CC46486E

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