Database of Termolecular Reactions

A curated collection of experimental data on three-body (termolecular) reactions, compiled by the JPR Group.

Why Termolecular Reactions Matter

Termolecular reactions play a vital role in atmospheric chemistry, combustion processes, and interstellar environments. This is a free and open source database that provides data on over 700 termolecular reactions across a variety of temperatures with proper sources provided.

Breakdown of Different Reaction Types

A visual summary of the different categories and frequencies of reactions stored in our database.

Histogram Plots for the Ionic and Nonionic Reactions

The four graphs are as follows: A: Non Ionic Reaction Rate k Histogram, B: Non Ionic Temperature Histogram, C: Ionic Reaction Rate k histogram, D: Ionic Temperature Histogram

Interesting Reactions in our Database

O + O₂ + M → O₃ + M

Key for ozone formation in the stratosphere. Data available across 200–300 K.

H + O₂ + M → HO₂ + M

Critical in combustion reactions. Temperature-dependent rates included.

N + N + M → N₂ + M

Important for interstellar nitrogen balance. Data curated from multiple sources.

CH₃ + CH₃ + M → C₂H₆ + M

Central in combustion kinetics. Well-studied in lab conditions.

How to Use

Navigate using the menu above or the “Explore the Database” button. Once inside, you can search, filter by temperature, and view original references and notes.