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

• Published in: Chemical communications (Cambridge, England) Vol. 50; no. 40; pp. 5361 - 5363
• Main Authors: Lee, Heui Beom, Bogart, Justin A., Carroll, Patrick J., Schelter, Eric J.
• Format: Journal Article
• Language: English
• Published: CAMBRIDGE Royal Soc Chemistry 01.01.2014
• Subjects: Beneficiation; Cations; Chemistry; Chemistry, Multidisciplinary; Ligands; Ores; Physical Sciences; Precursors; Rare earth metals; Science & Technology; Stabilization; Structural analysis; OXIDATION; CORE; GRAVIMETRIC DETERMINATION; EXTRACTION; CE(IV); CRYSTAL-STRUCTURE; SPECTROPHOTOMETRIC DETERMINATION; ACTINIDES; SEPARATION; SEQUESTERING AGENTS

Reaction of N-phenyl-pivalohydroxamic acid with Ce-III precursors leads to a homoleptic hydroxamate complex: Ce-IV[(BuC)-Bu-t(O)N(O) Ph](4). Electrochemical experiments indicate a significant stabilization of the Ce-IV cation at E-p,E-c = -1.20 V versus SCE in the hydroxamate ligand framework. The s...