2,6-Diiminopiperidin-1-ol: an overlooked motif relevant to uranyl and transition metal binding on poly(amidoxime) adsorbents

Journal Article · Fri Jan 01 00:00:00 EST 2016 · ChemComm

DOI:https://doi.org/10.1039/c6cc02488b· OSTI ID:1306751

Kennedy, Zachary C.; Cardenas, Allan Jay P.; Corbey, Jordan F.; Warner, Marvin G.

Glutardiamidoxime, a structural motif on sorbents used in uranium extraction from seawater, was discovered to cyclize in situ at room temperature to 2,6-diimino-piperidin-1-ol in the presence of uranyl nitrate. The new diimino motif was also generated when exposed to competing transition metals Cu(II) and Ni(II). Multinuclear μ-O bridged U(VI), Cu(II), and Ni(II) complexes featuring bound diimino ligands were isolated. A Cu(II) complex with the historically relevant cyclic imide dioxime motif is also reported for structural comparison to the reported diimino complexes.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5)
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1306751
• Report Number(s): PNNL-SA-117149; AF5855000
• Journal Information: ChemComm, Vol. 52, Issue 57; ISSN 1359-7345
• Publisher: Royal Society of Chemistry
• Country of Publication: United States
• Language: English

Related Subjects

Uranium Extraction
Coordination Chemistry
X-ray Crystallography