https://doi.org/10.1351/goldbook.E02123
Salts of @E02124@ (or of the tautomeric @A00208@ or @K03386@), in which the anionic charge is delocalized over oxygen and carbon, or similar covalent metal derivatives in which the metal is bound to oxygen.
E02123.png
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1334 [Terms] [Paper]