Related Experiment Video
Updated: Mar 27, 2026

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
Published on: July 19, 2019
Performance of First-Principles-Based Reaction Class Transition State Theory.
Artur Ratkiewicz1, Lam K Huynh2,3, Thanh N Truong4
1Chemistry Institute, University of Bialystok , Ciolkowskiego 1K 15-245 Bialystok, Poland.
Reaction Class Transition State Theory (RC-TST) accurately predicts rate constants for elementary reactions. This cost-effective method integrates with automated generators for complex kinetic models.
Area of Science:
- Chemical Kinetics
- Theoretical Chemistry
Background:
- Predicting reaction rate constants is crucial for understanding chemical processes.
- Existing methods can be computationally expensive or limited in scope.
Purpose of the Study:
- To evaluate the performance of Reaction Class Transition State Theory (RC-TST) for predicting elementary reaction rate constants.
- To highlight the potential of RC-TST for developing automated kinetic modeling.
Main Methods:
- Reviewing previous applications of RC-TST across various reaction classes.
- Analyzing the common structural features and structure-activity relationships within reaction families.
Main Results:
- RC-TST demonstrates effective prediction of rate constants for diverse elementary reactions.
- The theory provides a rigorous yet simple and cost-effective framework for rate expression derivation.
Conclusions:
- RC-TST offers a robust methodology for accurate kinetic modeling.
- Integration with automated mechanism generators enables efficient analysis of complex reacting systems.
More Related Videos
12:11Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
Published on: April 8, 2020
10:52Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
Published on: April 12, 2019
Related Concept Videos
Predicting Reaction Outcomes
Energy Diagrams, Transition States, and Intermediates
Temperature Dependence on Reaction Rate
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
Reaction Mechanisms: Rate-limiting Step Approximation
Woodward–Hoffmann Selection Rules and Microscopic Reversibility
Reaction Quotient