Polydentate and chelate

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JennyCKim1J
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

Polydentate and chelate

Postby JennyCKim1J » Sun Nov 26, 2017 5:25 pm

What is the difference between polydentate and chelate? By looking at [Co(en)3]3+, can I determine what ligands are attached to Co?

Curtis Tam 1J
Posts: 105
Joined: Thu Jul 13, 2017 3:00 am

Re: Polydentate and chelate

Postby Curtis Tam 1J » Sun Nov 26, 2017 6:33 pm

A polydentate can bind to multiple sites on the central atom. A chelate is a complex containing a ligand that forms a ring of atoms including the central atom. So a polydentate can be a chelate at the same time. I believe en itself is a ligand so since you have three of them and each is a bidentate, there will be six bonds connected to the central atom.


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