Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Collision rate constants for polarizable ions.

Brian R Eichelberger1, Theodore P Snow, Veronica M Bierbaum

  • 1Department of Chemistry and Biochemistry, Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, Colorado 80309, USA.

Journal of the American Society for Mass Spectrometry
|May 15, 2003
PubMed
Summary

This study refines the Langevin model for ion-neutral interactions, introducing anisotropic adjustments for induced dipole forces. New models show significant deviations from classical rates, highlighting the importance of orientation-dependent polarization effects in ion-neutral systems.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

My journey in life and chemistry.

Mass spectrometry reviews·2024
Same author

Single Solvent Molecules Induce Dual Nucleophiles in Gas-Phase Ion-Molecule Nucleophilic Substitution Reactions.

The journal of physical chemistry letters·2021
Same author

Gas-Phase Reactions of Deprotonated Nucleobases with H, N, and O Atoms.

The journal of physical chemistry letters·2019
Same author

Focus on Ion Mobility Spectrometry, Honoring Gert von Helden, Martin F. Jarrold, and David E. Clemmer, Recipients of the 2018 John B. Fenn Award for a Distinguished Contribution in Mass Spectrometry.

Journal of the American Society for Mass Spectrometry·2019
Same author

Elucidating the Reactivity of O<sub>2</sub> (a <sup>1</sup>Δ<sub>g</sub>): A Study with Amino Acid Anions and Related Sulfur and Oxygen Anionic Species.

The journal of physical chemistry. A·2019
Same author

Photoelectron spectroscopy and thermochemistry of o-, m-, and p-methylenephenoxide anions.

Physical chemistry chemical physics : PCCP·2018

Area of Science:

  • Physical Chemistry
  • Chemical Physics
  • Atomic and Molecular Interactions

Background:

  • The Langevin model, established nearly a century ago, describes ion-neutral interactions.
  • Numerous modifications exist to tailor the Langevin model for specific scenarios.
  • Understanding ion-neutral interactions is crucial in various chemical and physical processes.

Purpose of the Study:

  • To investigate the induced dipole-induced dipole interaction between an ion and a neutral lacking a permanent dipole.
  • To introduce and evaluate an anisotropic adjustment to the Langevin model.
  • To compare the Point Polarizable Ion (PPI) model with the Orientation Dependent Polarizable Ion (ODPI) model.

Main Methods:

  • Development and application of the Point Polarizable Ion (PPI) model.

Related Experiment Videos

  • Development and application of the Orientation Dependent Polarizable Ion (ODPI) model.
  • Analysis of systems with highly polarizable ions and weakly polarizable neutrals.

    • Main Results:

    • Observed significant deviations between the PPI and ODPI models.
    • Calculated rate constants showed substantial differences compared to classical Langevin predictions.
    • The anisotropic adjustment proved critical for accurate modeling in specific ion-neutral systems.

    Conclusions:

    • The ODPI model offers a more refined description of ion-neutral interactions than the PPI model, especially when anisotropy is present.
    • Classical Langevin rate constants may not accurately represent systems with significant induced dipole-induced dipole interactions.
    • The study underscores the importance of considering polarization anisotropy in ion-neutral collision dynamics.