Traducción y análisis de palabras por inteligencia artificial ChatGPT
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- cómo se usa la palabra
- frecuencia de uso
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- etimología
Qué (quién) es ligand - definición
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![''N''-heterocyclic carbene]] ligand called [[IMes]] is a bulky ligand by virtue of the pair of mesityl groups.](https://commons.wikimedia.org/wiki/Special:FilePath/1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (aka IMes).png?width=200 "''N''-heterocyclic carbene]] ligand called [[IMes]] is a bulky ligand by virtue of the pair of mesityl groups.")
![Cobalt(III) complex containing six [[ammonia]] ligands, which are monodentate. The chloride is not a ligand.](https://commons.wikimedia.org/wiki/Special:FilePath/CoA6Cl3.png?width=200 "Cobalt(III) complex containing six [[ammonia]] ligands, which are monodentate. The chloride is not a ligand.")
![Metal–[[EDTA]] complex, wherein the aminocarboxylate is a hexadentate (chelating) ligand](https://commons.wikimedia.org/wiki/Special:FilePath/Metal-EDTA.svg?width=200 "Metal–[[EDTA]] complex, wherein the aminocarboxylate is a hexadentate (chelating) ligand")
Wikipedia
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In coordination chemistry, a ligand is an ion or molecule (functional group) that binds to a central metal atom to form a coordination complex. The bonding with the metal generally involves formal donation of one or more of the ligand's electron pairs, often through Lewis bases. The nature of metal–ligand bonding can range from covalent to ionic. Furthermore, the metal–ligand bond order can range from one to three. Ligands are viewed as Lewis bases, although rare cases are known to involve Lewis acidic "ligands".
Metals and metalloids are bound to ligands in almost all circumstances, although gaseous "naked" metal ions can be generated in a high vacuum. Ligands in a complex dictate the reactivity of the central atom, including ligand substitution rates, the reactivity of the ligands themselves, and redox. Ligand selection requires critical consideration in many practical areas, including bioinorganic and medicinal chemistry, homogeneous catalysis, and environmental chemistry.
Ligands are classified in many ways, including: charge, size (bulk), the identity of the coordinating atom(s), and the number of electrons donated to the metal (denticity or hapticity). The size of a ligand is indicated by its cone angle.
