Structure And Bonding, Chelating Agents, Metal-ligand Bonds In Biological ChemistryOther uses
In inorganic chemistry, ligands are molecules or electrically charged atoms (ions) which are bonded to metal atoms or ions. The ligand changes the metal's ability to dissolve in or react with its surroundings. In biochemistry, ligands are defined as molecules, usually
protein, that change the biological activity of other molecules by bonding with them. The inorganic meaning is more common, and will be the subject of this article.
Inorganic salts, which contain metal ions, do not dissolve in organic solvents such as benzene. However, by surrounding the metal ion with a chelate called a "crown ether" the desired solution can be made. The mining industry uses cyanide ions to dissolve gold out of the quartz rocks in which it is often found. The cyanide ligands are removed in subsequent chemical steps.
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Schmidt, Karen F. "Mirror-Image Molecules." Science News 143 (May 29, 1993): 348-350.
"Molecular Architecture." Unit 9 of The World of Chemistry. Videotape Series. University of Maryland at College Park. Gilbert Castellan, Nava Ben-Zvi, and Isidore Adler, project co-directors. The Annenberg/CPB Project, 1990.
Sara G. B. Fishman
- Ligand - Structure And Bonding
- Ligand - Chelating Agents
- Ligand - Metal-ligand Bonds In Biological Chemistry
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