Non-chelate polydentate  [ENDORSED]

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Joonsoo Kim 4L
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Non-chelate polydentate

Postby Joonsoo Kim 4L » Sat Dec 08, 2018 7:55 pm

Is it possible for a polydentate ligand to bond to two different transition metal cations and not form a chelate?

Chem_Mod
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Re: Non-chelate polydentate

Postby Chem_Mod » Sun Dec 09, 2018 9:41 am

Yes, this is possible.

Katherine Fitzgerald 1A
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Re: Non-chelate polydentate

Postby Katherine Fitzgerald 1A » Tue Jul 30, 2019 7:46 am

So the real difference between polydentate and chelate is that polydentate may form multiple bonds to either the same or different atoms (does this mean two different atoms in the same molecule, or the central atoms of two different molecules), whereas chelating ligands only form bonds multiple bonds to one central atom?

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Re: Non-chelate polydentate

Postby Chem_Mod » Tue Jul 30, 2019 1:24 pm

A chelating ligand should bond more than once to the same metal atom. Therefore, it must be polydentate. However, a regular polydentate ligand does not have to ligate to the same metal and therefore, it is not neccessarily chelating.

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Re: Non-chelate polydentate  [ENDORSED]

Postby Chem_Mod » Tue Jul 30, 2019 3:37 pm

There is a good homework problem that addresses your question in detail. Take a look at the answer.


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