Cited by 63Calcium Carbonate Crystallization and InhibitionAdvanced Chemical Physics StudiesAdvanced Physical and Chemical Molecular Interactions

Ion Pairing and Multiple Ion Binding in Calcium Carbonate Solutions Based on a Polarizable AMOEBA Force Field and Ab Initio Molecular Dynamics

Open access
Raiteri, Paolo, Schuitemaker, Alicia, Gale, Julian D.·2020·The Journal of Physical Chemistry B

Published version of a preprint

Abstract

The speciation of calcium carbonate in water is important to the geochemistry of the world's oceans and has ignited significant debate regarding the mechanism by which nucleation occurs. Here, it is vital to be able to quantify the thermodynamics of ion pairing versus higher order association processes in order to distinguish between possible pathways. Given that it is experimentally challenging to quantify such species, here we determine the thermodynamics for ion pairing and multiple binding of calcium carbonate species using bias-enhanced molecular dynamics. In order to examine the uncertainties underlying these results, we derived a new polarizable force field for both calcium carbonate and bicarbonate in water based on the AMOEBA model to compare against our earlier rigid ion model, both of which are further benchmarked against ab initio molecular dynamics for the ion pair. Both force fields consistently indicate that the association of calcium carbonate ion pairs to form larger species is stable, though with an equilibrium constant that is lower than for ion pairing itself.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1021/acs.jpcb.0c01582

Cites

86 of 86 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The authors previously introduced AMOEBA parameters for Ca-carbonate in solution that improved Ca-carbonate ion binding free energies relative to earlier non-polarizable models.

    “We have recently introduced a new set of parameters based on the AMOEBA model for the interaction of calcium in solution with carbonate 26 that have improved the Ca-carbonate ion binding free energies compared to previous non-polarizable models.”
  • The new rigid-ion force field was developed by targeting the experimental hydration free energy of the aqueous ions and using ab initio carbonate-water radial distribution functions to guide refitting of CO3-water interactions.

    “Analogously to the AMOEBA potential, we targeted the experimental hydration free energy of the aqueous ions reported by Marcus, 38 and we used the ab initio carbonate water radial distribution functions 26 to guide the refitting of the CO 3 -water interactions.”
  • Charge localization on the anion has been shown to be a problem for the determination of the ion pair binding free energy from DFT.

    “In addition, by studying only the transition between the monoand bi-dentate configuration we have limited the errors related to charge localization on the anion, which has been shown to be a problem for the determination of the ion pair binding free energy from DFT, 26 as is the necessary use of a smaller cell size.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Marcus, Y. Ion Solvation; Wiley, 1985.
  2. Plummer, L. N.; Busenberg, E. The Solubilities of Calcite, Aragonite and Vaterite in H 2 O-Co 2 Solu- tions Between 0 and 90C, and an Evaluation of the Aqueous Model for the System CaCO 3 -Co 2 -H 2 O. Geochimica et Cosmochimica Acta 1982, 46, 1011-1040.

Cited by

Sorted by citations

Authors
Raiteri, P., Schuitemaker, A., & Gale, J. D.
Affiliations
Curtin University (AU)
Corresponding author
  • Raiteri, Paolo
  • Gale, Julian D.
Venue
The Journal of Physical Chemistry B
Published
2020-04-07
Volume
124
Issue
17
Pages
3568-3582
ISSN
  • 1520-5207 (ISSN-L)
  • 1520-6106
OpenAlex
W3014865952
Cited by
63
References
86
Citations by year
2026: 11 · 2025: 7 · 2024: 13 · 2023: 15 · 2022: 7 · 2021: 7 · 2020: 3
FWCI
2.08
Type
journal article
Language
en
Open access
Locations
  • The Journal of Physical Chemistry B (publishedVersion)
  • ChemRxiv (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • eSpace (Curtin University) (submittedVersion)
  • Royal College of Surgeons in Ireland (submittedVersion, cc-by-nc-nd)
Funders
  • Curtin University of Technology
  • Australian Research Council (FL180100087, FT130100463)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Calcium Carbonate Crystallization and Inhibition
  • 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
Keywords
calcium carbonate, ion pairing, polarizable force field, AMOEBA force field, bicarbonate, calcium carbonate nucleation, equilibrium constants, marine geochemistry

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review