Concept of Chelation

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John_Richey_4A
Posts: 69
Joined: Fri Sep 28, 2018 12:27 am

Concept of Chelation

Postby John_Richey_4A » Sat Dec 08, 2018 4:34 pm

Could someone explain the concept of chelation and how to figure out if a molecule is chelating?

Casandra
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Re: Concept of Chelation

Postby Casandra » Sat Dec 08, 2018 4:41 pm

A chelate is a coordination compound containing a ligand bonded to a central at two or more points, usucally froming a ring. so if a coordination compound contains at least one non-monodentate ligand it's considered a chelate. An exapmle is ironn in hemoglobin.

Lisa Werner 2F
Posts: 72
Joined: Fri Sep 28, 2018 12:17 am

Re: Concept of Chelation

Postby Lisa Werner 2F » Sat Dec 08, 2018 4:52 pm

From my understanding, chelation occurs when a polydentate ligand bonds with a central metal in more than two places, creating a ring. Therefore, only polydentate ligands can be chelating.

605168557
Posts: 65
Joined: Fri Sep 28, 2018 12:18 am

Re: Concept of Chelation

Postby 605168557 » Sat Dec 08, 2018 6:38 pm

Chelation involves the formation or presence of 2 or more separate coordination bonds between a multiple bonded ligand and central atom. The 'chelate' just refers to that specific type of ligand. You can identify based on its polydentate structure.


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