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The formation of Fe(III)-EDTA (FeY) − can be described as follows: FeSO 4 ∙7H 2 O + K 2 H 2 Y + 1/4 O 2 → K[FeY(H 2 O)]. H 2 O + KHSO 4 + 5.5 H 2 O (1) [8]. Iron chelate has also been used as a bait in the chemical control of slugs, snails and slaters in agriculture in Australia and New Zealand.
Typically both oxygen atoms bind to the metal to form a six-membered chelate ring. The simplest complexes have the formula M(acac) 3 and M(acac) 2. Mixed-ligand complexes, e.g. VO(acac) 2, are also numerous. Variations of acetylacetonate have also been developed with myriad substituents in place of methyl (RCOCHCOR ′ −). [1]
For example, species of Pseudomonas are known to secrete pyochelin and pyoverdine that bind iron. Enterobactin , produced by E. coli , is the strongest chelating agent known. The marine mussels use metal chelation, especially Fe 3+ chelation with the Dopa residues in mussel foot protein-1 to improve the strength of the threads that they use to ...
In humans, IL-6 production results in low serum iron, making it difficult for invading pathogens to infect. Such iron depletion has been demonstrated to limit bacterial growth in both extracellular and intracellular locations. [47] In addition to "iron withdrawal" tactics, mammals produce an iron –siderophore binding protein, siderochelin.
The reduction strategy helps in making the iron more aqueous soluble, and allows the iron to become more bioavailable in order for uptake to occur. This is because the Fe 2+ product is not able to mineralize like the Fe 3+, as it does not bind significantly to the chelate ligand that is designed to bind Fe 3+.
Chelating resins are a class of ion-exchange resins.They are almost always used to bind cations, and utilize chelating agents covalently attached to a polymer matrix. Chelating resins have the same bead form and polymer matrix as usual ion excha
Chelation therapy is a medical procedure that involves the administration of chelating agents to remove heavy metals from the body. [1] Chelation therapy has a long history of use in clinical toxicology [2] and remains in use for some very specific medical treatments, although it is administered under very careful medical supervision due to various inherent risks, including the mobilization of ...
Ferric citrate or iron(III) citrate describes any of several complexes formed upon binding any of the several conjugate bases derived from citric acid with ferric ions. Most of these complexes are orange or red-brown. They contain two or more Fe(III) centers. [3] Ferric citrates contribute to the metabolism of iron by some organisms. Citrates ...
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