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Chelateing Ligands

Posted: Sun Nov 24, 2019 5:05 pm
by Ashley Kao 1H
When do we know to add a ring in a chelate? Also, can someone explain what a chelate is?

Re: Chelateing Ligands

Posted: Mon Nov 25, 2019 12:25 pm
by Sahil Jog 1F
A chelate is a compound where the central atom is essentially "wrapped" inside a ring created by more molecules. These molecules need to be bonded to each other in a ring shape, essentially allowing for greater stability of the entire molecule. You can tell whether a compound is a chelate or not by just looking at its Lewis Structure and what you know about its VSPER model. If the ligands are close enough to form a bond with other ligands and are able to do so without breaking the octet rule, then you would typically have a "ring" around the central transition metal, making a chelate.

Re: Chelateing Ligands

Posted: Mon Nov 25, 2019 12:31 pm
by PranaviKolla2B
Does someone have a video or online tutorial that explains this well?

Re: Chelateing Ligands

Posted: Mon Nov 25, 2019 12:38 pm
by Sean Cheah 1E
Chelating ligands are polydentate ligands that are able to form a ring-like structure of atoms that includes the central metal cation. As an example, each ethylenediamine (molecular formula: C2H4(NH2)2) ligand in the compound pictured below binds the central Cobalt cation to form two such rings.
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