polydentates

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KarlaArevalo2F
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Joined: Tue Nov 14, 2017 3:01 am
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polydentates

Postby KarlaArevalo2F » Fri Dec 07, 2018 10:59 pm

How do we easily find out if the coordination compound is polydentate?

timothy_ho_4B
Posts: 61
Joined: Fri Sep 28, 2018 12:29 am

Re: polydentates

Postby timothy_ho_4B » Fri Dec 07, 2018 11:15 pm

I feel like there's not really an "easy" way to find out whether a compound is a polydentate, but I think the best way is to write out the Lewis diagram and see whether there are multiple locations where the ligand can bond with the metal cation. Also take into account the sigma and pi bonds (single/double/triple) to see whether those bonds can actually rotate or not.

605168557
Posts: 65
Joined: Fri Sep 28, 2018 12:18 am

Re: polydentates

Postby 605168557 » Sat Dec 08, 2018 5:20 pm

I think the only way would be to draw the Lewis structure and see if it is attached to the central atom by 2 or more bonds. Knowing the number of donor atoms with electron pairs can also help identify if it would be a polydentate.

Casandra
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Re: polydentates

Postby Casandra » Sat Dec 08, 2018 5:26 pm

There's no easy way to know whether a coordination compound is polydentate, for this it is helpful to draw the lewis structure. But it is also good to know that bidentate ligands are ethylenediamine (en), and the oxalate ion (ox). Ethylenediaminetetraaceticacid acid (EDTA) is a hexadentate ligand and diethylenentriamine(dien) is a tridentate.

AngelaZ 1J
Posts: 65
Joined: Fri Sep 28, 2018 12:23 am

Re: polydentates

Postby AngelaZ 1J » Sun Dec 09, 2018 3:45 pm

Easiest way would be to memorize the common polydentate ligands.

davidryan3f
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Re: polydentates

Postby davidryan3f » Sun Dec 09, 2018 3:47 pm

Either simply memorize the common polydentates or draw the Lewis structure to determine if has two or more bonds that attach it to the central atom.


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