Structural and thermodynamic properties of the CmIII ion solvated by water and methanol
Abstract
The geometric and electronic structures of the 9-coordinate Cm3+ ion solvated with both water and methanol are systematically investigated in the gas phase at each possible solvent-shell composition and configuration using density functional theory and second-order Møller–Plesset perturbation theory. Ab initio molecular dynamics simulations are employed to assess the effects of second and third solvent shells on the gas-phase structure. The ion–solvent dissociation energy for methanol is greater than that of water, potentially because of increased charge donation to the ion made possible by the electron-rich methyl group. Further, the ion–solvent dissociation energy and the ion–solvent distance are shown to be dependent on the solvent-shell composition. This has implications for solvent exchange, which is generally the rate-limiting step in complexation reactions utilized in the separation of curium from complex metal mixtures that derive from the advanced nuclear fuel cycle.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Washington State Univ., Pullman, WA (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Washington State Univ., Pullman, WA (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Washington State Univ., Pullman, WA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1258488
- Alternate Identifier(s):
- OSTI ID: 1596311
- Report Number(s):
- LA-UR-16-20652
Journal ID: ISSN 0020-1669
- Grant/Contract Number:
- AC52-06NA25396; SC0001815
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Inorganic Chemistry
- Additional Journal Information:
- Journal Volume: 55; Journal Issue: 10; Journal ID: ISSN 0020-1669
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Kelley, Morgan P., Yang, Ping, Clark, Sue B., and Clark, Aurora E. Structural and thermodynamic properties of the CmIII ion solvated by water and methanol. United States: N. p., 2016.
Web. doi:10.1021/acs.inorgchem.6b00477.
Kelley, Morgan P., Yang, Ping, Clark, Sue B., & Clark, Aurora E. Structural and thermodynamic properties of the CmIII ion solvated by water and methanol. United States. https://doi.org/10.1021/acs.inorgchem.6b00477
Kelley, Morgan P., Yang, Ping, Clark, Sue B., and Clark, Aurora E. Wed .
"Structural and thermodynamic properties of the CmIII ion solvated by water and methanol". United States. https://doi.org/10.1021/acs.inorgchem.6b00477. https://www.osti.gov/servlets/purl/1258488.
@article{osti_1258488,
title = {Structural and thermodynamic properties of the CmIII ion solvated by water and methanol},
author = {Kelley, Morgan P. and Yang, Ping and Clark, Sue B. and Clark, Aurora E.},
abstractNote = {The geometric and electronic structures of the 9-coordinate Cm3+ ion solvated with both water and methanol are systematically investigated in the gas phase at each possible solvent-shell composition and configuration using density functional theory and second-order Møller–Plesset perturbation theory. Ab initio molecular dynamics simulations are employed to assess the effects of second and third solvent shells on the gas-phase structure. The ion–solvent dissociation energy for methanol is greater than that of water, potentially because of increased charge donation to the ion made possible by the electron-rich methyl group. Further, the ion–solvent dissociation energy and the ion–solvent distance are shown to be dependent on the solvent-shell composition. This has implications for solvent exchange, which is generally the rate-limiting step in complexation reactions utilized in the separation of curium from complex metal mixtures that derive from the advanced nuclear fuel cycle.},
doi = {10.1021/acs.inorgchem.6b00477},
journal = {Inorganic Chemistry},
number = 10,
volume = 55,
place = {United States},
year = {Wed Apr 27 00:00:00 EDT 2016},
month = {Wed Apr 27 00:00:00 EDT 2016}
}
Web of Science
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