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Chelation (/ k iː ˈ l eɪ ʃ ən /) is a type of bonding of ions and their molecules to metal ions. It involves the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central metal atom.
Pages in category "Chelating agents" The following 164 pages are in this category, out of 164 total. This list may not reflect recent changes. ...
"Chelating agents" are ligands that bind metal ions through more than one bond. Most chelating agents are organic compounds, e.g., EDTA 4-. Metal chelate formulations often contain 10-20% of the metal. [6] A variety of chelating agents are used, such as peptides and amino acids derived from hydrolysed soy proteins, which form amino acid complexes.
Ligands that bind via more than one atom are often termed chelating. A ligand that binds through two sites is classified as bidentate, and three sites as tridentate. The "bite angle" refers to the angle between the two bonds of a bidentate chelate. Chelating ligands are commonly formed by linking donor groups via organic linkers.
Recent data suggest that iron-chelating molecules with similar properties to siderophores, were produced by marine bacteria under phosphate limiting growth condition. In nature phosphate binds to different type of iron minerals, and therefore it was hypothesized that bacteria can use siderophore-like molecules to dissolve such complex in order ...
Chelating agents (5 C, 164 P) Chemical classes of psychoactive drugs (21 C, 25 P) Coordination complexes (34 C, 99 P) ... Pages in category "Chemical compounds"
Thus, ionization of aliphatic –OH groups occurs in aqueous solution only in special circumstances. One such circumstance is found with compounds containing the H 2 N–C–C–OH substructure. For example, compounds containing the 2-aminoethanol substructure can form metal–chelate complexes with the deprotonated form, H 2 N–C–C–O − ...
Polydentate ligands are chelating agents [7] and classified by their denticity. Some atoms cannot form the maximum possible number of bonds a ligand could make. In that case one or more binding sites of the ligand are unused. Such sites can be used to form a bond with another chemical species.