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Title: Elucidating Actinide–Pertechnetate and Actinide–Perrhenate Bonding via a Family of Th–TcO4 and Th–ReO4 Frameworks and Solutions

Journal Article · · Inorganic Chemistry

Technetium-99, a β-emitter produced from 235U fission, poses a challenge for the nuclear industry due to co-extraction of pertechnetate (TcO4) with the actinides (An) during nuclear fuel reprocessing. Previous studies suggested that direct coordination of pertechnetate with An plays an important role in the coextraction process. However, few studies have provided direct evidence for An–TcO4 bonding in the solid state, and even fewer in solution. The present study describes synthesis and structural elucidation of a family of thorium(IV)-pertechnetate/perrhenate (ReO4, nonradioactive surrogate) compounds, which is obtained by dissolution of thorium oxyhydroxide in perrhenic/pertechnic acid followed by crystallization, with or without heating. For reaction ratios of 3:1, 4:1, and 6:1 MO4/Th(IV) (M = Tc, Re), the crystallized compounds reflect the same ratio, suggesting facile and flexible coordination. Furthermore, nine structures reveal 1-dimensional and 2-dimensional frameworks with varying topologies. While a multitude of compounds isolated from 4:1 (and 6:1) reaction solutions feature Th monomers linked by MO4, the 3:1 reaction solution yielded the well-known dihydroxide-bridged thorium dimer, linked, and capped by MO4. Density functional theory calculations on ReO4/TcO4 isomorphs suggest similar bonding characteristics in the solid state, but experimental solution characterization noted differences. Specifically, small-angle X-ray scattering studies suggest the bonding of Th–TcO4 persists in solution, while Th–ReO4 bonding is less apparent.

Research Organization:
University of Notre Dame, IN (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); Murdock Charitable Trust
Grant/Contract Number:
NA0003763; SR-2017297
OSTI ID:
1986489
Journal Information:
Inorganic Chemistry, Vol. 62, Issue 26; ISSN 0020-1669
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (52)

NDTB-1: A Supertetrahedral Cationic Framework That Removes TcO 4 from Solution journal February 2010
Thorium(IV) Molecular Clusters with a Hexanuclear Th Core journal October 2011
OLEX2 : a complete structure solution, refinement and analysis program journal January 2009
Solution and Solid-State Structural Chemistry of Actinide Hydrates and Their Hydrolysis and Condensation Products journal October 2012
X-ray diffraction "fingerprinting" of DNA structure in solution for quantitative evaluation of molecular dynamics simulation journal February 2006
Thorium(IV) chromate(VI) monohydrate journal November 2006
Structural Units in Three Uranyl Perrhenates journal October 2007
A grid-based Bader analysis algorithm without lattice bias journal January 2009
A fast and robust algorithm for Bader decomposition of charge density journal June 2006
Bridging the Transuranics with Uranium(IV) Sulfate Aqueous Species and Solid Phases journal November 2020
Pertechnic Acid : an Aperiodic Variation in Acid Strength journal July 1963
Valence basis sets for relativistic energy-consistent small-core lanthanide pseudopotentials journal October 2001
Structure of trigonal thorium molybdate journal November 1989
Synthesis and properties of neptunium(VI,V) and plutonium(VI) pertechnetates journal March 2003
Segmented contraction scheme for small-core lanthanide pseudopotential basis sets journal April 2002
The coordination of perrhenate and pertechnetate to thorium(iv) in the presence of phosphine oxide or phosphate ligands journal January 2006
Comprehensive derivation of bond-valence parameters for ion pairs involving oxygen journal September 2015
Macrocycle complexation chemistry 34. Polyethylene glycol and glycolate complexes of Th4+. Preparation and structural characterization of [ThCl3(pentaethylene glycol)]Cl·CH3CN and the (Th4+)4 cluster, [Th4Cl8(O)(tetraethylene glycolate)3]·3CH3CN journal April 1991
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu journal April 2010
Metal–Oxo Cluster Formation Using Ammonium and Sulfate to Differentiate MIV (Th, U, Ce) Chemistries journal July 2022
Accurate and efficient algorithm for Bader charge integration journal February 2011
Synthesis and Characterization of Thorium(IV) Sulfates journal September 2011
Thorium(IV)–Selenate Clusters Containing an Octanuclear Th(IV) Hydroxide/Oxide Core journal March 2012
Technetium in alkaline, high-salt, radioactive tank waste supernate: Preliminary characterization and removal report January 1997
Effect of the damping function in dispersion corrected density functional theory journal March 2011
Balanced basis sets of split valence, triple zeta valence and quadruple zeta valence quality for H to Rn: Design and assessment of accuracy journal January 2005
Bader’s Theory of Atoms in Molecules (AIM) and its Applications to Chemical Bonding journal October 2016
Developing and Testing an Alkaline-Side Solvent Extraction Process for Technetium Separation from tank Waste journal January 1999
Structural Approach to Understanding the Solubility of Metal Hydroxides journal May 2019
Irena : tool suite for modeling and analysis of small-angle scattering journal February 2009
Natural population analysis journal July 1985
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Viability of thorium-based nuclear fuel cycle for the next generation nuclear reactor: Issues and prospects journal December 2018
Unexpected Structural Complexity in Cesium Thorium Molybdates journal April 2014
Influence of the exchange screening parameter on the performance of screened hybrid functionals journal December 2006
Structural Variations in Complex Sodium Thorium Arsenates journal July 2020
Assessment of the Perdew–Burke–Ernzerhof exchange-correlation functional journal March 1999
Toward reliable density functional methods without adjustable parameters: The PBE0 model journal April 1999
A review of technetium and zirconium extraction into tributyl phosphate in the PUREX process journal May 2022
The Synthesis, Structural, and Spectroscopic Characterization of Uranium(IV) Perrhenate Complexes journal October 2005
Coordination of pertechnetate [TcO4]? to actinides journal January 2004
Structural Approach to Understanding the Formation of Amorphous Metal Hydroxides journal November 2022
Charge Model 5: An Extension of Hirshfeld Population Analysis for the Accurate Description of Molecular Interactions in Gaseous and Condensed Phases
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journal February 2012
Th(IV) Bromide Complexes: A Homoleptic Aqua Ion and a Novel Th(H2O)4Br4 Structural Unit journal June 2022
From Thorium to Plutonium: Trends in Actinide(IV) Chloride Structural Chemistry journal June 2019
Improved grid-based algorithm for Bader charge allocation journal January 2007
Thorium Oxo‐Clusters as Building Blocks for Open Frameworks journal August 2018
Bonded-atom fragments for describing molecular charge densities journal January 1977
Rationale for mixing exact exchange with density functional approximations journal December 1996
Structures of Dimeric Hydrolysis Products of Thorium journal April 2007
Crystal chemistry of thorium nitrates and chromates journal July 2010
The crystal chemistry of four thorium sulfates journal July 2011