{"term":{"id":"00642","title":"bifunctional catalysis","longtitle":"IUPAC Gold Book - bifunctional catalysis","doi":"10.1351\/goldbook.B00642","code":"B00642","status":"current","synonym":"<em>synonym<\/em>: polyfunctional catalysis","definitions":[{"id":1,"text":"Catalysis (usually for hydron transfer) by a bifunctional chemical species involving a mechanism in which both functional groups are implicated in the rate-controlling step, so that the corresponding catalytic coefficient is larger than that expected for catalysis by chemical species containing only one of these functional groups. The term should not be used to describe the concerted action of two different catalysts ('concerted catalysis').","links":[{"term":"catalysis","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/C00874"},{"term":"catalytic coefficient","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/C00885"},{"term":"chemical species","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/CT01038"},{"term":"concerted","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/C01234"},{"term":"functional groups","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/F02555"},{"term":"hydron","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/H02904"},{"term":"rate-controlling step","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/R05139"}],"sources":["PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1089 (https:\/\/doi.org\/10.1351\/pac199466051077)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/B00642\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/B00642\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/B00642\/plain"},"citation":"Citation: 'bifunctional catalysis' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.B00642","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-04-21T13:01:25+00:00"}}