determining if polydentate

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Rebecca Epner 4A
Posts: 53
Joined: Sat Aug 17, 2019 12:18 am

determining if polydentate

Postby Rebecca Epner 4A » Mon Nov 25, 2019 4:29 pm

How do you determine if a ligand can be polydentate?
For example, question 9C.5 asks to determine if the following ligand is polydentate, and if so, give the maximum number of places on the ligand that can bind simultaneously to a single metal center.
HN(CH2CH2NH2)2

McKenna_4A
Posts: 115
Joined: Sat Aug 24, 2019 12:18 am

Re: determining if polydentate

Postby McKenna_4A » Mon Nov 25, 2019 5:51 pm

Polydentate refers to a ligand forming multiple bonds with the central atom. If a Ligand has multiple sites that can bond (Polar regions, lone pairs etc..) it is said to be polydentate

Ryan Chang 1C
Posts: 105
Joined: Sat Aug 24, 2019 12:17 am

Re: determining if polydentate

Postby Ryan Chang 1C » Mon Nov 25, 2019 8:20 pm

Correct me if I'm wrong but I believe HN(CH2CH2NH2)2 is tridentate because the central atom would be nitrogen, which is attached to a hydrogen and 2 CH2CH2NH2 molecules.

Chantel_2I
Posts: 109
Joined: Sat Sep 07, 2019 12:19 am

Re: determining if polydentate

Postby Chantel_2I » Mon Nov 25, 2019 9:17 pm

This molecule has three Nitrogen atoms, each with a lone pair. Each long pair can form a bond with a cation, so it is tridentate.


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