Polydentate ligands and shape

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905022356
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Joined: Mon Oct 02, 2017 7:19 am

Polydentate ligands and shape

Postby 905022356 » Sat Nov 18, 2017 2:53 pm

EDTA is a hexadentate ligand, so it forms six coordinate bonds with Fe(III). Would that make the structure of the complex octahedral even when the six bonds formed are with the same ligand? Would the coordination number still be 6 even if iron is binding to one ligand?

Jingyi Li 2C
Posts: 56
Joined: Fri Sep 29, 2017 7:06 am

Re: Polydentate ligands and shape

Postby Jingyi Li 2C » Sat Nov 18, 2017 4:33 pm

Yes, EDTA is a hexadentate ligand and it forms six coordinate bonds with Fe(III). Therefore, iron would have the coordination number of 6 because of the six bonds formed. However, I believe that EDTA and iron would form a chelate complex.


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