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Actinyl cation–cation interactions in the gas phase: an accurate thermochemical study

Journal Article · · Physical Chemistry Chemical Physics. PCCP
DOI:https://doi.org/10.1039/c9cp00760a· OSTI ID:1611063
 [1];  [2];  [3]
  1. Washington State Univ., Pullman, WA (United States); Washington State University
  2. Indiana State Univ., Terre Haute, IN (United States)
  3. Washington State Univ., Pullman, WA (United States)
Gas phase actinyl cation–cation interactions (CCIs) were studied by an accurate composite coupled cluster thermochemical approach for the first time. A number of CCI dimers were constructed from the monomers UO22+, UO2+, NpO22+, NpO2+, PuO2+, and AmO2+. All CCI dimers studied were calculated to be thermodynamically unstable, with dissociation energies ranging from -60 to -90 kcal mol-1, but in many cases kinetic stability was indicated by calculated local minima with well depths as large as ~15 kcal mol-1. Most of the dimers studied involved a T-shaped geometry, although one side-on dimer, (UO2+)2, was included since it was amenable to coupled cluster methods. In the T-shaped isomers the most stable dimers were calculated to arise when the oxo-group of an An(V) actinyl cation was oriented towards the metal center of an An(VI) actinyl cation. For both mixed-valent An(VI)/An(V) and mono-valent An(V) dimers, the stability as estimated from the depth of the calculated local minimum decreased in the donor series U(V) > Np(V) > Pu(V) > Am(V). These trends correlate well with experimental trends in condensed phase CCIs. A rationale for the bonding in CCIs was investigated by carrying out charge transfer analyses using the natural bond orbital (NBO) method. Augmenting the usual Lewis acid-base explanation, CCIs are the direct result of a competition between charge transfer stabilization, which can be as much as 0.11e or 30.7 kcal mol-1 at equilibrium, and Coulombic repulsive destabilization.
Research Organization:
Washington State Univ., Pullman, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0008501
OSTI ID:
1611063
Alternate ID(s):
OSTI ID: 1503922
Journal Information:
Physical Chemistry Chemical Physics. PCCP, Journal Name: Physical Chemistry Chemical Physics. PCCP Journal Issue: 15 Vol. 21; ISSN 1463-9076
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (56)

New Reactivity of the Uranyl(VI) Ion journal November 2012
Synthesis and Characterization of the First 2 D Neptunyl Structure Stabilized by Side-on Cation-Cation Interactions journal January 2013
Cation—Cation Interaction in Crystalline Actinide Compounds journal June 2004
Study of Hg22+ and Complexes of NpO2+ and UO22+ in Solution. Examples of Cation—Cation Interactions journal December 2005
Cation—Cation Interactions and Antiferromagnetism in Na[Np(V)O2(OH)2]: Synthesis, Structure, and Magnetic Properties. journal April 2007
The Role of Cation—Cation Interactions in a Neptunyl Chloride Hydrate and Topological Aspects of Neptunyl Structural Units. journal May 2007
A Theoretical Study of the Inner-Sphere Disproportionation Reaction Mechanism of the Pentavalent Actinyl Ions journal October 2007
One-Dimensional Array of Two- and Three-Center Cation—Cation Bonds in the Structure of Li4 [(UO2)10O10(Mo2O8)]. journal December 2007
Molpro: a general-purpose quantum chemistry program package: Molpro
  • Werner, Hans-Joachim; Knowles, Peter J.; Knizia, Gerald
  • Wiley Interdisciplinary Reviews: Computational Molecular Science, Vol. 2, Issue 2 https://doi.org/10.1002/wcms.82
journal July 2011
Dirac–Fock Atomic Electronic Structure Calculations Using Different Nuclear Charge Distributions journal November 1997
Comment on: “Estimating the Hartree–Fock limit from finite basis set calculations” [Jensen F (2005) Theor Chem Acc 113:267] journal December 2005
Chemical accuracy in ab initio thermochemistry and spectroscopy: current strategies and future challenges journal January 2012
Quantum electrodynamical corrections to the fine structure of helium journal January 1974
Ab initio total atomization energies of small molecules — towards the basis set limit journal September 1996
A Practical Guide to Reliable First Principles Computational Thermochemistry Predictions Across the Periodic Table book January 2012
A fifth-order perturbation comparison of electron correlation theories journal May 1989
The role of cation–cation interactions in a neptunyl chloride hydrate and topological aspects of neptunyl structural units journal January 2007
Synthesis, structure determination, and infrared spectroscopy of (NpO2)2(SO4)(H2O)4: Prevalence of cation–cation interactions and cationic nets in neptunyl sulfate compounds journal January 2009
Cation–cation interactions and cation exchange in a series of isostructural framework uranyl tungstates journal May 2014
From Two-Dimensional Layers to Three-Dimensional Frameworks: Expanding the Structural Diversity of Uranyl Compounds by Cation–Cation Interactions journal June 2015
Three-Dimensional Network of Cation–Cation-Bound Neptunyl(V) Squares: Synthesis and in Situ Raman Spectroscopy Studies journal February 2016
Cation−Cation Interactions and Antiferromagnetism in Na[Np(V)O 2 (OH) 2 ]:  Synthesis, Structure, and Magnetic Properties journal January 2007
Uranyl Bearing Hybrid Materials: Synthesis, Speciation, and Solid-State Structures journal August 2012
An Appraisal of Valence-bond Structures and Hybridization in Compounds of the First-row elements. journal June 1961
Raman spectrometric studies of "cation-cation" complexes of pentavalent actinides in aqueous perchlorate solutions journal March 1982
Study of Hg 2 2+ and Complexes of NpO 2 + and UO 2 2+ in Solution. Examples of Cation−Cation Interactions journal October 2005
A Theoretical Study of the Inner-Sphere Disproportionation Reaction Mechanism of the Pentavalent Actinyl Ions journal August 2007
Cation–Cation Interactions: Crystal Structures of Neptunyl(V) Selenate Hydrates, (NpO 2 ) 2 (SeO 4 )(H 2 O) n ( n = 1, 2, and 4) journal June 2011
Three New Sodium Neptunyl(V) Selenate Hydrates: Structures, Raman Spectroscopy, and Magnetism journal February 2012
Cation–Cation Interactions between Neptunyl(VI) Units journal June 2012
Kinetics and mechanism of the disproportionation of uranium(V) journal September 1974
One-Dimensional Array of Two- and Three-Center Cation−Cation Bonds in the Structure of Li 4 [(UO 2 ) 10 O 10 (Mo 2 O 8 )] journal October 2007
Synthesis, Structure, and Infrared Spectroscopy of the First Np 5+ Neptunyl Silicates, Li 6 (NpO 2 ) 4 (H 2 Si 2 O 7 )(HSiO 4 ) 2 (H 2 O) 4 and K 3 (NpO 2 ) 3 (Si 2 O 7 ) journal January 2008
A Comparison of Neptunyl(V) and Neptunyl(VI) Solution Coordination: The Stability of Cation−Cation Interactions journal June 2008
Specific Interaction between Np(V) and U(VI) in Aqueous Perchloric Acid Media 1 journal August 1961
Ionization Energies for the Actinide Mono- and Dioxides Series, from Th to Cm: Theory versus Experiment journal May 2010
Gas-Phase Energetics of Actinide Oxides: An Assessment of Neutral and Cationic Monoxides and Dioxides from Thorium to Curium journal November 2009
Generation, Stability, and Reactivity of Small, Multiply Charged Ions in the Gas Phase journal September 1999
Dissecting the cation–cation interaction between two uranyl units journal January 2016
Parallel Douglas–Kroll energy and gradients in NWChem: Estimating scalar relativistic effects using Douglas–Kroll contracted basis sets journal January 2001
Exact decoupling of the Dirac Hamiltonian. II. The generalized Douglas–Kroll–Hess transformation up to arbitrary order journal January 2004
A survey of factors contributing to accurate theoretical predictions of atomization energies and molecular structures journal November 2008
On the effectiveness of CCSD(T) complete basis set extrapolations for atomization energies journal July 2011
Gaussian basis sets for use in correlated molecular calculations. I. The atoms boron through neon and hydrogen journal January 1989
Molecular open shell configuration interaction calculations using the Dirac–Coulomb Hamiltonian: The f6 ‐manifold of an embedded EuO 9− 6 cluster journal February 1992
Electron affinities of the first‐row atoms revisited. Systematic basis sets and wave functions journal May 1992
Coupled‐cluster methods with noniterative triple excitations for restricted open‐shell Hartree–Fock and other general single determinant reference functions. Energies and analytical gradients journal June 1993
Coupled cluster theory for high spin, open shell reference wave functions journal October 1993
An exact separation of the spin‐free and spin‐dependent terms of the Dirac–Coulomb–Breit Hamiltonian journal February 1994
Correlation consistent basis sets for actinides. II. The atoms Ac and Np–Lr journal August 2017
Cation–cation interaction in crystalline actinide compounds journal January 2004
Direct Cation- -Cation Interactions in Several Oxides journal March 1960
Revision of the Douglas-Kroll transformation journal June 1989
Cation-cation interactions between uranyl(VI) ions journal March 2014
Complexation of Pentavalent and Hexavalent Actinides by Fluoride journal January 1984
Comment on: "Estimating the Hartree-Fock limit from finite basis set calculations" [Jensen F (2005) Theor Chem Acc 113:267] text January 2005

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