activation energy (Arrhenius activation energy)
An empirical parameter characterizing the exponential temperature dependence of the @R05137@, \(k\), \(E_{a} = R\, T^{2}\frac{\text{d(ln}k\text{)}}{\text{d}T}\), where \(R\) is the @G02579@ and \(T\) the @T06321@. The term is also used for @T06366@ in electronic potential surfaces, in which case the term requires careful definition.
Green Book, 2nd ed., p. 55 [Terms] [Book]
See also:
PAC, 1993, 65, 2291. (Nomenclature of kinetic methods of analysis (IUPAC Recommendations 1993)) on page 2294 [Terms] [Paper]
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1112 [Terms] [Paper]
PAC, 1996, 68, 149. (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 151 [Terms] [Paper]