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Correction: Electrolyte clusters as hydrogen sponges: diffusion Monte Carlo simulations.

Physical chemistry chemical physics : PCCP·2025
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Electrolyte clusters as hydrogen sponges: diffusion Monte Carlo simulations.

A R Zane1, E Curotto1

  • 1Department of Chemistry & Physics Arcadia University, 450 S. Easton Rd., Glenside, PA 19038, USA. curotto@arcadia.edu.

Physical Chemistry Chemical Physics : PCCP
|October 21, 2022
PubMed
Summary
This summary is machine-generated.

Simulations show that hydrogen molecules significantly alter lithium-ion solvation shells within Stockmayer clusters. These hydrogen aggregates form distorted cages around the ion, impacting its electronic ground state.

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Area of Science:

  • Computational Chemistry
  • Physical Chemistry
  • Quantum Chemistry

Background:

  • Investigating the solvation structure of ions is crucial for understanding electrolyte behavior.
  • Stockmayer clusters provide a model system for studying ion-solvation interactions.
  • The influence of small molecules like hydrogen on ion solvation shells is not fully understood.

Purpose of the Study:

  • To explore the effect of aggregated hydrogen molecules on the solvation shell of a lithium ion.
  • To analyze the structural and electronic perturbations induced by hydrogen aggregation.
  • To compare the behavior of hydrogen aggregation in two different Stockmayer cluster models.

Main Methods:

  • Diffusion Monte Carlo (DMC) simulations were employed.
  • Systems studied included a lithium ion solvated by two distinct Stockmayer clusters.
  • One cluster emulated nitromethane, while the other was a larger, previously studied system.

Main Results:

  • Aggregated hydrogen molecules significantly perturbed the ground state of the host solvation cluster.
  • A distorted tetrahedral cage structure formed around the lithium ion due to hydrogen aggregation.
  • In the larger cluster, the fifth hydrogen molecule was absorbed while remaining near the lithium ion.

Conclusions:

  • Hydrogen molecule aggregation has a substantial impact on the structure and electronic properties of ion solvation shells.
  • The formation of distorted cages highlights the significant influence of these aggregates on ion-solvent interactions.
  • Further studies are warranted to fully elucidate the role of such aggregates in electrolyte systems.