energized species

In an elementary process, a species having sufficient energy to become an @A00092@, but which does not have the structure of the @A00092@. If it is not inactivated by collisions it can become an @A00092@ and pass at once into products, after undergoing vibration.
PAC, 1996, 68, 149. (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 164 [Terms] [Paper]