DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Computational study of the electrostatic potential and charges of multivalent ionic liquid molecules

Journal Article · · Journal of Molecular Liquids

The electrostatic interactions in ionic liquids (ILs) can be difficult to quantify, but this information is very valuable for improving intermolecular potentials for performing molecular-level simulations. Although polarizable forcefields can provide improved accuracy, the computational efficiency of fixed charge molecular models is often preferred for larger systems. Here, we propose a multi-scale screening approach for analyzing the charge scaling behavior and other electrostatic properties of ILs, which is more attainable than previous analysis methods that rely on the IL crystalline structures. Based on isolated molecules and small clusters, we study the electrostatic potential properties and charges of multivalent IL molecules using density-functional theory calculations and ab initio molecular dynamics simulations. The charges of the IL molecules are calculated and compared using several different charge estimation techniques. Although there are some differences among the estimated partial charges on the atoms, the total anion and cation charges are very similar. In conclusion, the charge scaling factors are substantial, and they are only slightly affected by the IL cluster size model.

Research Organization:
Univ. of Alabama, Tuscaloosa, AL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0018181
OSTI ID:
1830668
Journal Information:
Journal of Molecular Liquids, Journal Name: Journal of Molecular Liquids Vol. 340; ISSN 0167-7322
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (51)

Di- and Tricationic Organic Salts: An Overview of Their Properties and Applications: Di- and Tricationic Organic Salts: Properties and Applications journal April 2014
Development and testing of a general amber force field journal January 2004
Multiwfn: A multifunctional wavefunction analyzer journal December 2011
Atomic charges derived from semiempirical methods journal May 1990
Bonded-atom fragments for describing molecular charge densities journal January 1977
van der Waals potential: an important complement to molecular electrostatic potential in studying intermolecular interactions journal October 2020
Wavefunction and reactivity study of benzo[a]pyrene diol epoxide and its enantiomeric forms journal April 2014
Statistically-based interaction indices derived from molecular surface electrostatic potentials: a general interaction properties function (GIPF) journal April 1994
VMD: Visual molecular dynamics journal February 1996
Charge-transfer in Symmetry-Adapted Perturbation Theory journal April 2009
Quantitative analysis of molecular surface based on improved Marching Tetrahedra algorithm journal September 2012
Lithium batteries: Status, prospects and future journal May 2010
DFT study of structures and hydrogen bonds of imidazolium based halogen-free boron containing dicationic ionic liquids journal April 2018
Quantum Chemical Methods for the Prediction of Energetic, Physical, and Spectroscopic Properties of Ionic Liquids journal January 2017
Molecular Dynamics Simulations of Ionic Liquids and Electrolytes Using Polarizable Force Fields journal May 2019
Improved Peptide and Protein Torsional Energetics with the OPLS-AA Force Field journal June 2015
A Robust and Accurate Tight-Binding Quantum Chemical Method for Structures, Vibrational Frequencies, and Noncovalent Interactions of Large Molecular Systems Parametrized for All spd-Block Elements ( Z = 1–86) journal April 2017
Psi4 1.1: An Open-Source Electronic Structure Program Emphasizing Automation, Advanced Libraries, and Interoperability journal June 2017
libreta : Computerized Optimization and Code Synthesis for Electron Repulsion Integral Evaluation journal January 2018
GFN2-xTB—An Accurate and Broadly Parametrized Self-Consistent Tight-Binding Quantum Chemical Method with Multipole Electrostatics and Density-Dependent Dispersion Contributions journal January 2019
Screening Ionic Liquids Based on Ionic Volume and Electrostatic Potential Analyses journal April 2021
Solubility Behavior of CO 2 in Ionic Liquids Based on Ionic Polarity Index Analyses journal April 2021
Understanding Gas Solubility of Pure Component and Binary Mixtures within Multivalent Ionic Liquids from Molecular Simulations journal July 2021
Atoms in molecules journal January 1985
Room-Temperature Ionic Liquids: Solvents for Synthesis and Catalysis. 2 journal May 2011
Gas Solubility in Ionic Liquids journal November 2013
Structure and Nanostructure in Ionic Liquids journal June 2015
Charge Model 5: An Extension of Hirshfeld Population Analysis for the Accurate Description of Molecular Interactions in Gaseous and Condensed Phases
  • Marenich, Aleksandr V.; Jerome, Steven V.; Cramer, Christopher J.
  • Journal of Chemical Theory and Computation, Vol. 8, Issue 2, p. 527-541 https://doi.org/10.1021/ct200866d
journal February 2012
Lattice Potential Energy Estimation for Complex Ionic Salts from Density Measurements journal April 2002
Relationships among Ionic Lattice Energies, Molecular (Formula Unit) Volumes, and Thermochemical Radii journal August 1999
Investigation of Donor-Acceptor Interactions: A Charge Decomposition Analysis Using Fragment Molecular Orbitals journal June 1995
A well-behaved electrostatic potential based method using charge restraints for deriving atomic charges: the RESP model journal October 1993
The OPLS [optimized potentials for liquid simulations] potential functions for proteins, energy minimizations for crystals of cyclic peptides and crambin journal March 1988
Properties of atoms in molecules: atomic volumes journal December 1987
A new force field for molecular mechanical simulation of nucleic acids and proteins journal February 1984
Structure and Properties of High Stability Geminal Dicationic Ionic Liquids journal January 2005
Mechanism of N 2 O Reduction by the μ 4 -S Tetranuclear Cu Z Cluster of Nitrous Oxide Reductase journal January 2006
Volume-Based Thermodynamics: A Prescription for Its Application and Usage in Approximation and Prediction of Thermodynamic Data journal April 2011
Molecular Dynamics Study of the Ionic Liquid 1- n -Butyl-3-methylimidazolium Hexafluorophosphate journal December 2002
Molecular Force Field for Ionic Liquids Composed of Triflate or Bistriflylimide Anions journal October 2004
Breakdown of the Single-Exchange Approximation in Third-Order Symmetry-Adapted Perturbation Theory journal December 2011
A Simple AIMD Approach to Derive Atomic Charges for Condensed Phase Simulation of Ionic Liquids journal August 2012
Accurately extracting the signature of intermolecular interactions present in the NCI plot of the reduced density gradient versus electron density journal January 2017
Atomic charges of sulfur in ionic liquids: experiments and calculations journal January 2018
Automated exploration of the low-energy chemical space with fast quantum chemical methods journal January 2020
Molecular insight into the anion effect and free volume effect of CO 2 solubility in multivalent ionic liquids journal January 2020
Electronic Population Analysis on LCAO–MO Molecular Wave Functions. I journal October 1955
Natural population analysis journal July 1985
B97-3c: A revised low-cost variant of the B97-D density functional method journal February 2018
Generalized Gradient Approximation Made Simple journal October 1996
Generalized Charge Decomposition Analysis (GCDA) Method [广义化的电荷分解分析(GCDA)方法] journal January 2015