Cited by 187Advanced Chemical Physics StudiesAdvanced Physical and Chemical Molecular InteractionsSpectroscopy and Quantum Chemical Studies

Thermodynamically Consistent Force Field for Molecular Dynamics Simulations of Alkaline-Earth Carbonates and Their Aqueous Speciation

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Raiteri, Paolo, Demichelis, Raffaella, Gale, Julian D.·2015·The Journal of Physical Chemistry C

Abstract

In recent years atomistic simulations have become increasingly important in providing molecular insight to complement experiments. Even for the seemingly simple case of ion-pair formation a detailed atomistic picture of the structure and relative stability of the contact, solvent-shared and solvent-separated ion pairs can only be readily achieved by computer simulation. Here a new force field parametrization for the alkaline-earth carbonate interactions in water has been developed by fitting against experimental thermodynamic and structural data. We demonstrate that the present force field can accurately reproduce the dynamics and thermodynamics of the ions in solution, which is the key to producing quantitatively accurate data that can be compared against experiment.

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Crossref · 10.1021/acs.jpcc.5b07532

Cites

84 of 84 references verified0 citation errors · 0 not checkable

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  • Carbonate anions can catalyse the water exchange reaction around Mg2+ in the solvent-separated ion-pair state.

    “This is consistent with the prospect of synergistic effects arising from carbonate anions that can catalyse the water exchange reaction around Mg 2+ in the solvent-separated ion-pair state.131”

    From Molecular-scale mechanisms of CO2 mineralization in nanoscale interfacial water films (2022) · cites this paper as [131]

    In “Solution Properties of Individual Ions” (page unavailable), the paper says water exchange around Mg²⁺ might be faster when Mg²⁺ is bound to carbonate, but reports no exchange during a 50 ns simulation. That possibility concerns carbonate-bound Mg²⁺, not the solvent-separated ion-pair state specified in the claim; the paper does not establish catalysis in that state. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • The ~67 kJ/mol reduction of the energy barrier is much larger than the ~16 kJ/mol difference between the Mg2+ and Ca2+ transition energy barriers from solvent-separated to monodentate contact ion-pair states.

    “For example, the ~67 kJ/mol reduction of the energy barrier is much larger than the ~16 kJ/mol 131 difference between the Mg 2+ and Ca 2+ transition energy barriers from solvent-separated to monodentate contact ion-pair states.”
  • The AMOEBA and new rigid-ion force fields reproduce the toroidal water oxygen density around carbonate, whereas the former rigid-ion parameters concentrate water oxygen density predominantly along each C-Oc direction.

    “While the AMOEBA and new rigid-ion force fields are both able to reproduce this specific structure, this is not the case of the former rigid-ion parameters 20 which seem to concentrate the water oxygen density predominantly along each C-O c direction instead.”
  • The former rigid-ion parameters produce a bimodal first peak in the C-Ow RDF, indicating a wider distribution of C-Ow distances in the first hydration shell.

    “the RDF between carbon of carbonate and oxygen of water obtained with the former rigid-ion parameters 20 displays a bimodal first peak, indicating a wider distribution of C-O w distances in the first hydration shell.”
  • The current and former rigid-ion force fields predict shorter Mg-O distances in the first solvation shell, 1.94 Å for this work and 1.99 Å for Raiteri et al.

    “both the current and former non-polarizable rigid-ion force fields predict slightly shorter Mg-O distances in the first solvation shell, with r M g-O = 1.94 Å (this work) and r M g-O = 1.99 Å. 20”

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Cites

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Research works printed but not linked: 4

  1. [37]37. Antao, S. M.; Hassan, I. The Orthorhombic Structure of CaCO 3 , SrCO 3 , PbCO 3 And BaCO 3 : Linear Structural Trends. Can. Mineral. 2009, 47, 1245- 1255.
  2. [38]38. Holl, C. M.; Smyth, J. R.; Laustsen, H.; Jacobsen, S. D.; Downs, R. T. Compression of Witherite to 8 GPa and the Crystal Structure of BaCO3II. Phys. Chem Miner. 2000, 27, 467-473.
  3. [45]45. Tribello, G. A.; Bonomi, M.; Branduardi, D.; Camilloni, C.; Bussi, G. Computer Physics Communications. Comput. Phys. Commun. 2014, 185, 604-613.
  4. [71]71. Bénézeth, P.; Saldi, G. D.; Dandurand, J.-L.; Schott, J. Chemical Geology. Chem. Geol. 2011, 286, 21-31.

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Authors
Raiteri, P., Demichelis, R., & Gale, J. D.
Affiliations
Curtin University (AU)
Corresponding author
Raiteri, Paolo
Venue
The Journal of Physical Chemistry C
Published
2015-10-21
Volume
119
Issue
43
Pages
24447-24458
ISSN
  • 1932-7447 (ISSN-L)
  • 1932-7455
OpenAlex
W2286413847
Cited by
185
References
84
Citations by year
2026: 16 · 2025: 7 · 2024: 14 · 2023: 21 · 2022: 26 · 2021: 26 · 2020: 18 · 2019: 14 · 2018: 20 · 2017: 15 · 2016: 7 · 2015: 1
FWCI
7.28
Type
journal article
Language
en
Open access
Locations
  • The Journal of Physical Chemistry C (publishedVersion)
  • eSpace (Curtin University) (submittedVersion)
Funders
  • Curtin University of Technology
  • Australian Research Council (DP0986999, FT130100463)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Chemical Physics Studies
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Advanced Physical and Chemical Molecular Interactions
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Spectroscopy and Quantum Chemical Studies
Keywords
alkaline earth carbonates, force field parameterization, ion pairing, aqueous speciation, thermodynamic consistency, calcium carbonate, magnesium carbonate, ion solvation, contact ion pairs, solvent-separated ion pairs

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