What does maleate mean?
A maleate is a chemical compound derived from maleic acid. The term can denote a salt, an ester, or the maleate ion, depending on context, and it is especially common in coordination chemistry, where this negatively charged ion forms complexes with metal centres. Its name is connected with the broader family of words derived from the Latin malus, meaning “apple,” through the older chemical name malic acid and the related English adjective malic. Maleates should not be confused with malates, which derive from malic acid and have a different chemical structure. Although the vocabulary is technical, the word is useful when reading descriptions of salts, ligands, coordination compounds, and biochemical substances, where distinguishing closely related chemical names is essential.
nounA salt, ester, or anion derived from maleic acid. In biochemical contexts, the term may also refer to a compound in which maleate is associated with a metal ion or other group.
- Any salt or ester of maleic acid.
- The negatively charged ion derived from maleic acid, especially as a ligand in coordination chemistry.
"The compound was crystallized as a zinc maleate for further analysis."
"Zinc maleate was heated in a covered crucible."
"The maleate ion coordinates with several metal centres in the crystal structure."
Used when referring to multiple salts, esters, or maleate ions.
"Several transition-metal maleates were examined by spectroscopy."
The name travels through “apple”: maleic acid was named from the Latin word for apple, although the acid itself is not an apple-derived substance.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does maleate come from?
The word is derived from maleic acid, whose name in turn comes from French acide malique. The French term draws on Latin malus, meaning “apple,” through the older family of words associated with malic acid, the substance originally obtained from fruit. The suffix -ate is used in chemistry to indicate a salt, ester, or ion derived from an acid.
How maleate is actually used
This is a specialized chemical term. In biochemistry and coordination chemistry, it most often refers to the maleate ion or a metal–maleate complex rather than to an isolated salt.
Easily confused with maleate
A maleate derives from maleic acid, whereas a malate derives from malic acid; the two parent acids have different chemical structures.