chelate A chemical complex formed from a polydentate ligand and a metal ion, thus making a ring. Chelates are more stable than the corresponding unidentate complexes, and are used to sequester metal ions (see hard water, as well as in chemical analysis and for separating metals. Some biochemical substances, including chlorophyll and hemoglobin, are chelates. Related category CHEMICAL BONDING Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |