Term: disproportionation
https://doi.org/10.1351/goldbook.D01799

Definition:
Any chemical reaction of the type D01799-0.png, where A, A' and A'' are different chemical species. For example: D01799-1.png The reverse of disproportionation is called comproportionation. A special case of disproportionation (or 'dismutation') is 'radical disproportionation', exemplified by: D01799-2.png Reactions of the more general type: D01799-3.png are also loosely described as radical disproportionations.

Related Terms:
1) comproportionation (http://doi.org/10.1351/goldbook.C01217).

Images:
1) Not defined (https://goldbook.iupac.org/img/inline/D01799-0.png) 
2) Not defined (https://goldbook.iupac.org/img/inline/D01799-1.png) 
3) Not defined (https://goldbook.iupac.org/img/inline/D01799-2.png) 
4) Not defined (https://goldbook.iupac.org/img/inline/D01799-3.png) 

Source: PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1107 (https://doi.org/10.1351/pac199466051077)

Citation: 'disproportionation' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.D01799

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