Polydentate ligands/Shapes

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904914037
Posts: 65
Joined: Wed Sep 18, 2019 12:16 am

Polydentate ligands/Shapes

Postby 904914037 » Tue Nov 26, 2019 8:08 pm

For understanding the shape of a coordination compound/complex, is this based off of the coordination number? Do polydentate ligands contribute to the shape differently than a monodentate ligand, and if so, how? Thank you!

Kavee Dodampahala 4E
Posts: 51
Joined: Sat Jul 20, 2019 12:17 am

Re: Polydentate ligands/Shapes

Postby Kavee Dodampahala 4E » Tue Nov 26, 2019 8:26 pm

The shape of the ligand is based on the VSEPR shape around the central atom. By knowing the shape of the ligand, you can see how it could possible bind to the metal in what locations, and then figure out the general shape of the complex as a whole.

Kelvin Chung 1C
Posts: 50
Joined: Sat Aug 24, 2019 12:15 am

Re: Polydentate ligands/Shapes

Postby Kelvin Chung 1C » Wed Nov 27, 2019 9:46 am

Dr. Lavelle also said in class that the shape of certain ligands make it easier for them to chelate. For example, although ethylenediamine has its nitrogen atoms at opposite ends of the molecule, its large shape allows it to reach and bind to two points of a central metal atom.


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