Journal article
Exploring crown-ether functionalization on the stabilization of hexavalent neptunium
Chemical communications (Cambridge, England), Vol.55(63), pp.9319-9322
07/17/2019
DOI: 10.1039/c9cc04393d
PMID: 31313772
Abstract
Crown-ether molecules are used in radiochemical separations due to their high selectivity for a range of metal cations. Previous investigations regarding the interactions of 18-crown-6 (18C6) with 237Np suggested the formation of a Np(v) inclusion complex, but also reported rapid reduction of Np(vi) to Np(v) in the presence of the ether molecule. Herein, we investigate the impact of crown ether functionalization by exploring the Np(v) and Np(vi) dicyclohexano-18-crown-6 (DCH-18C6) systems. Two [X(DCH-18C6)]2[Np(vi)O2Cl4] compounds (X = K (1) and Na (2)) were crystallized and characterized by single crystal X-ray diffraction and Raman spectroscopy. Additional studies of Np(vi), Np(v), and Np(v)/Np(vi) in solution indicated redox stability in the presence of functionalized crowns and preferential crystallization of Np(vi) DCH-18C6 solids. These results indicate that functionalization of the crown can lead to higher resistance to radiolysis and increased stability of the Np(vi) oxidation state in solution.
Details
- Title: Subtitle
- Exploring crown-ether functionalization on the stabilization of hexavalent neptunium
- Creators
- Mikaela M Pyrch - Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA. tori-forbes@uiowa.eduJames M Williams - Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA. tori-forbes@uiowa.eduTori Z Forbes - Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA. tori-forbes@uiowa.edu
- Resource Type
- Journal article
- Publication Details
- Chemical communications (Cambridge, England), Vol.55(63), pp.9319-9322
- DOI
- 10.1039/c9cc04393d
- PMID
- 31313772
- NLM abbreviation
- Chem Commun (Camb)
- ISSN
- 1359-7345
- eISSN
- 1364-548X
- Publisher
- Royal Society of Chemistry
- Grant note
- DOI: 10.13039/100006151, name: Basic Energy Sciences, award: DE-SC0013980
- Language
- English
- Date published
- 07/17/2019
- Academic Unit
- Civil and Environmental Engineering; Chemistry
- Record Identifier
- 9984216727702771
Metrics
17 Record Views