a compound formed by combination of a metal ion in solution with a compound containing heteroatoms (such as oxygen or nitrogen), in which at least two heteroatoms are bound to the metal. The bonds may be covalent or non-covalent. Chelates in some cases have very low dissociation constants, and organic compounds (chelating agents) which form such chelates are therefore used to reduce the concentration of free metal ions in solution.
Pronounced KEY-late. Also called sequester. It is the process of preventing metals in the water from combining with other components in water to form colored precipitates that stain pool walls and bottom or produce colored water.
Pincherlike; having two opposable claws.
A combination of a metal ion and an organic molecule which results in making the metal ion less reactive with other chemical species in water or in a soil solution.
Chelate is a chemical compound that contains both a metal and an organic molecule in such a way that the metal is bound within the organic molecule and holds onto it like a "claw". The word chelate refers to "claw" - an expression that describes the ability of an organic (carbon) molecule to hold onto a metal molecule like copper, iron, zinc etc. A chleated compound is one that can supply the metal after the organic portion is removed. Some plant fertilizers are chleated such that the metal is released over time to the plant to supply this important nutrient. Chleated fertilizers tend to be less toxic due to their slow released of the metal. Foliar feeding and injected fertilizers commonly use chleated fertilizers.
Combine reversibly, usually with high affinity, with a metal ion such as iron, calcium, or magnesium.
Refers to a chemical complex where iron or some other mineral is tightly bound to an organic compound. This facilitates the uptake of iron and other trace elements by aquarium plants.
a heterocyclic compound having a metal ion attached by coordinate bonds to at least two nonmetal ions
having or resembling chelae or claws
a chemical compound composed of a metal ion and a chelating agent
a chemical compound formed by multiple bonds of a chelating agent (e
a chemical compound in which the central atom (usually a metal ion) is attached to neighboring atoms by at least two bonds in such a way as to form a ring structure
a chemical compound that contains a central metal ion, combined with an organic molecule that has many bonds organized in ringed formations
a chemical compound that keeps the iron available to the plant over a broad pH range
a chemical made up of
a chemical that will perform chelation, defined as the reaction between a metal ion and the complexing agent, resulting in formation of ring structures incorporating the ion
a complex formation of a metal ion and two or more charged molecule groups
a compound in which certain metallic cations are complexed or bound to an organic molecule
a molecular complex formed when a cation (metal ion) is bonded by two or more atomic groups within a molecule such as EDTA
a molecular structure around a metallic element that prevents the metal from becoming tied to the soil in a form unavailable to the plant
a soluble product formed when certain atoms combine with certain organic molecules
(chelate, claw): When the propodus and dactylus form a pincer-like structure (the dactylus articluates against the propodus). See figure.
A molecule combining a metal ion with two or more non-metal ions. Chelation may be used to remove ions from solutions and soils.
A chemical compound whose molecules contain metal (iron) atoms.
A chemical compound whose molecules contain a closed ring of atoms, of which one is a metal atom.
The process of rendering metals unable to combine with other chemicals in water to form stains or discolored water.
A compound formed when a metallic ion is bound to an organic molecule; used to improve availability of minerals.
To combine a metal ion and a complexing agent to form a ring structure
Cyclic structures of a normally non-soluble metal ion and an organic component that, when held together, become soluble in water.
A stable complex of a metal with one or more polydentate ligands. For example, calcium complexes with EDTA to form a chelate.
(1) A molecular structure in which a heterocyclic ring can he formed by the unshared electrons of neighboring atoms. (2) A coordination compound in which a heterocyclic ring is formed by a metal bound to two atoms of the associated ligand. See also complexation.
An inorganic chemical ring complex which has a metal ion enclosed.
Made up of a compound, such as an amino acid, bound to a metallic ion. Often minerals are chelated so the body can better assimilate them.
the combination of a metal with an organic molecule to form a ring-like structure known as a chelate. Chelation of a metal may inhibit or enhance its bioavailability.
The complex formed between a metal ion and an organic liquid, which has more than one binding site. EDTA is a common chelating agent to remove Mg or other metal ions from availability in solution.
(kee-late) The formation of strong bonds between metals and organic compounds. Some are insoluble such as in soil humus. Those chelates used in fertilizers are soluble an help keep the nutrient metals like iron, zinc, manganese, and copper mobile in the solution, thus improving plant uptake. Derived from Latin to mean (claw-like).
Chemical compounds able to bind heavy metal salts and make them insoluble in water.
Organic substances that cause the chemical process of chelation.
Complex formed between a metal ion and another molecule that has more than one binding site. EDTA is a common chelating agent to remove Mg or other metal ions from availability in solution. Patented chelating groups have been created that can chelate Europium so that it can be attached to a molecule as a tag.
To form a complex chemical compound in which an ion, usually metallic, is bound into a stable ring structure.