Determining if ligands can be polydentate.

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Corryn Doll
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Joined: Fri Apr 06, 2018 11:02 am

Determining if ligands can be polydentate.

Postby Corryn Doll » Thu Jun 14, 2018 12:05 am

I understand that some ligands can be polydentate, or occupy more than one binding site simultaneously, however im not quite sure how to go about determining which ligands can be polydentate. Could someone help me out?

Thanks.

Chem_Mod
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Re: Determining if ligands can be polydentate.

Postby Chem_Mod » Thu Jun 14, 2018 3:41 pm

A ligand is a lewis base, meaning it has a pair of lone pair electrons which can and will donate. So for something to be polydentate it must have multiple atoms within the same molecule that have free lone pair electrons to donate and bind to the metal simultaneously. This also requires that the multiple atoms are at a reasonable angle that they could both bind to the metal. The best way to know all of this is to draw the lewis structure for the ligand and determine if it has multiple atoms which can bind to the metal simultaneously.


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