Divalent groups, R2C=, formed by removing two hydrogen atoms from the same carbon atom of a @H02889@, the free valencies of which are engaged in a double bond.
Source: PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1341 [Terms] [Paper]
Citation: 'hydrocarbylidene groups' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.H02892 RISBibTexEndNote