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Exploring Covalency in the Actinides Using Soft Donor-Based Ligands and Metal-Ligand Multiple Bonding

Technical Report ·
DOI:https://doi.org/10.2172/1782213· OSTI ID:1782213
 [1]
  1. Univ. of Missouri, Columbia, MO (United States)
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Closing the fuel cycle is critical to the renaissance of nuclear energy in the United States. Essential in closing the fuel cycle is identification of separation strategies for actinides and fission products from spent fuels and identification of host matrices for storage or transmutation of fission products. These issues are intensified due to the complex nature of the problem (e.g., high radiation fields, high thermal fields, long half-lives of certain fission products). The use of extractor ligands with soft donor atoms has been demonstrated to selectively sequester actinides over their lanthanide counterparts. This has been presumed to be enhanced covalent bonding between the actinide 5f orbitals and the valence ligand-based orbitals; however, the coordination chemistry and reactivity with ligands containing selenium, tellurium, phosphorus, and arsenic are underdeveloped. Additionally, compounds containing actinide-ligand multiple bonding will be explored to examine pi-bonding with 5f orbitals. Efforts will be made to develop this chemistry with neptunium as well. This research explores the unique structure, bonding, and reactivity of the actinide elements while developing the underlying fundamental science involved in the separation of actinides.

Research Organization:
Univ. of Missouri, Columbia, MO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
DOE Contract Number:
SC0014174
OSTI ID:
1782213
Report Number(s):
DE-SC0014174; TRN: US2216100
Country of Publication:
United States
Language:
English

References (18)

Phosphorano-Stabilized Carbene Complexes with Short Thorium(IV)– and Uranium(IV)–Carbon Bonds journal June 2018
Metal-Ligand Multiple Bonding in Thorium Phosphorus and Thorium Arsenic Complexes journal November 2017
Influence of Substituents on the Electronic Structure of Mono- and Bis(phosphido) Thorium(IV) Complexes journal June 2018
Insertion of t BuNC into thorium–phosphorus and thorium–arsenic bonds: phosphaazaallene and arsaazaallene moieties in f element chemistry journal January 2016
Formation of Methane versus Benzene in the Reactions of (C 5 Me 5 ) 2 Th(CH 3 ) 2 with [CH 3 PPh 3 ]X (X=Cl, Br, I) Yielding Thorium-Carbene or Thorium-Ylide Complexes journal September 2017
Double insertion of benzophenone into thorium-phosphorus bonds journal February 2018
Thorium(IV) and Uranium(IV) Phosphaazaallenes journal August 2019
Organometallic Uranyl Complexes Featuring a Carbodicarbene Ligand journal March 2020
Coordination Chemistry and QTAIM Analysis of Homoleptic Dithiocarbamate Complexes, M(S 2 CN i Pr 2 ) 4 (M = Ti, Zr, Hf, Th, U, Np) journal August 2018
Formation of a Bridging Phosphinidene Thorium Complex journal November 2015
Functionalization of Carbon Monoxide and tert -Butyl Nitrile by Intramolecular Proton Transfer in a Bis(Phosphido) Thorium Complex journal November 2018
Formation of an α-Diimine from Isocyanide Coupling Using Thorium(IV) and Uranium(IV) Phosphido–Methyl Complexes journal April 2019
Synthesis and Utility of Neptunium(III) Hydrocarbyl Complex journal September 2019
Comparative Insertion Reactivity of CO, CO 2 , t BuCN, and t BuNC into Thorium– and Uranium–Phosphorus Bonds journal May 2020
Divergent uranium- versus phosphorus-based reduction of Me 3 SiN 3 with steric modification of phosphido ligands journal January 2020
Uranium( iii ) and thorium( iv ) alkyl complexes as potential starting materials journal January 2016
Structure and properties of [(4,6- t Bu 2 C 6 H 2 O) 2 Se] 2 An(THF) 2 , An = U, Np, and their reaction with p -benzoquinone journal January 2018
Four-electron reduction chemistry using a uranium( iii ) phosphido complex journal January 2018

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