Carboxilát

Carboxilát is the anionic form of a carboxylic acid. It is a molecule that has lost a proton (H+) from its carboxyl group (-COOH), resulting in a negatively charged group (-COO-). This deprotonation typically occurs in aqueous solutions when the pH is above the pKa of the carboxylic acid. Carboxylate ions are common in organic chemistry and biochemistry. They are important in many biological processes, such as acting as buffers in blood, forming salts with metal ions, and participating in enzyme active sites. Many common substances contain carboxylate groups, including fatty acids and amino acids. The presence of the negative charge on the carboxylate group makes it more soluble in polar solvents like water and capable of forming ionic bonds. In organic synthesis, carboxylates can act as nucleophiles or be converted into other functional groups like esters or amides. Their charge and reactivity make them versatile building blocks in chemical reactions.