Carboxylate
![Carboxylate ion](/Images/godic/202502/03/Carboxylate-resonance-hybrid5422.png")
![Acrylate ion](/Images/godic/202502/03/Acrylate-ion-3D-balls5422.png")
A carboxylate is a salt or ester of a carboxylic acid. Carboxylate salts have the general formula M(RCOO)n, where M is a metal and n is 1,2,...; carboxylate esters have the general formula RCOOR'. R and R' are organic groups; R'≠H.
A carboxylate ion is the conjugate base of a carboxylic acid, RCOO. It is an ion with negative charge.