Concise guide to what each column means.
This page explains the dataset columns and gives guidance for interpretation, units, and uncertainties.
If a row lists $A = 1.2\times 10^{30}$, $n = -2.5$, and $E = 5.1\;\text{kcal mol}^{-1}$, then the generalized Arrhenius form is $$k(T) = A T^n e^{-E/(RT)}.$$ Use $R = 1.9872\times10^{-3}\;\text{kcal mol}^{-1}\text{K}^{-1}$ to evaluate the exponential term when $E$ is in kcal/mol.
Balanced chemical equation for the process studied. If a third body is required, it is shown as M. Radical species are denoted with a dot (•).
Activation energy in kcal/mol. Appears in the Arrhenius exponent: $e^{-E/(RT)}$. Provided alongside the kJ value.
Same activation energy in kJ/mol. Conversion: $1\;\text{kcal mol}^{-1} = 4.184\;\text{kJ mol}^{-1}$.
Frequency factor in the Arrhenius expression. Units depend on molecularity (termolecular → cm⁶ mol⁻² s⁻¹). Appears in $k(T) = A T^n e^{-E/(RT)}$.
Rate constant at the given temperature. For termolecular reactions: cm⁶ mol⁻² s⁻¹.
Exponent in $k(T) = A T^n e^{-E/(RT)}$. Accounts for deviations from simple Arrhenius behavior. For $n=0$ That means $T=1$ and is constant.
Temperature (Kelvin) for which $k$ applies. If a range is shown, parameters are valid within that range.