Karboksylaattiyksiköt
Karboksylaattiyksiköt are chemical entities characterized by the presence of a carboxylate group (COO−). This functional group is the deprotonated form of a carboxylic acid (COOH). In aqueous solutions or in the presence of bases, carboxylic acids readily lose a proton (H+) to form the negatively charged carboxylate anion. The carboxylate group is a common feature in many organic and inorganic compounds, playing crucial roles in various chemical and biological processes.
The carboxylate anion is resonance-stabilized, meaning the negative charge is delocalized between the two oxygen atoms.
In biological systems, carboxylate groups are fundamental components of amino acids, forming the acidic end of