Polydentate  [ENDORSED]

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Taravat_Lakzian_1C
Posts: 18
Joined: Wed Sep 21, 2016 2:56 pm

Polydentate

Postby Taravat_Lakzian_1C » Mon Nov 14, 2016 2:12 pm

Could someone please explain what a polydentate is and how you would determine whether it is monodentate, bidentate, tridentate and so on?

Aaron_Trell_2J
Posts: 18
Joined: Sat Jul 09, 2016 3:00 am

Re: Polydentate

Postby Aaron_Trell_2J » Mon Nov 14, 2016 2:24 pm

The term polydentate means that there is more than one ligand bonded to the transition metal. For example tridentate just means that there are three ligands attached to the transition metal.

Rachel_Smith_3D
Posts: 21
Joined: Wed Sep 21, 2016 2:58 pm

Re: Polydentate  [ENDORSED]

Postby Rachel_Smith_3D » Mon Nov 14, 2016 2:32 pm

Ligands can be either ions or molecules. Ions only bond once to the central atom/ion in a d-metal complex, but some molecules are longer so that more than one atom in the molecule binds to the central atom. In this case, a ligand is polydentate.

Unlike what the other person said, polydentate describes a ligand, and the prefix before -dentate is the number of bonds between that ligand and the central atom. For example, a ligand that binds twice is bidentate, and one that only binds once is monodentate.


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