Transition species

Term · Chemistry · MLC-T-CHM-012237

Any species that occurs between reactants and products during an elementary reaction, which includes the activated complex at the energy maximum but also other short-lived arrangements along the path. The name avoids confusion with the transition state proper, the configuration at the top of the energy barrier, a name that has also been applied loosely to these species.

Table 1. Record
Identifier	MLC-T-CHM-012237
Field	Chemistry
Subject	Physical and Biophysical Chemistry
References	PAC, 1996, 68, 149. 'A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)' on page 190 (https://doi.org/10.1351/pac199668010149)
See also	Activated complex; Elementary reaction; Transition state

Record as JSON

{
  "id": "MLC-T-CHM-012237",
  "term": "Transition species",
  "field": "Chemistry",
  "definition": "Any species that occurs between reactants and products during an elementary reaction, which includes the activated complex at the energy maximum but also other short-lived arrangements along the path. The name avoids confusion with the transition state proper, the configuration at the top of the energy barrier, a name that has also been applied loosely to these species.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "activated complex",
    "elementary reaction",
    "transition state"
  ],
  "references": [
    "PAC, 1996, 68, 149. 'A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)' on page 190 (https://doi.org/10.1351/pac199668010149)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/transition-species/"
}

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