polydentates

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lauraxie2e
Posts: 108
Joined: Fri Aug 09, 2019 12:17 am

polydentates

Postby lauraxie2e » Mon Dec 02, 2019 6:08 pm

If you're looking at a chemical equation, how do you know if it can be polydentate? For example HN(CH2CH2NH2)2?

Ryan Yee 1J
Posts: 101
Joined: Sat Aug 17, 2019 12:16 am

Re: polydentates

Postby Ryan Yee 1J » Mon Dec 02, 2019 6:25 pm

It can be polydentate when there are multiple spaces for electrons to bind to a metal. You can tell if a chemical will be polydentate if it has multiple lone pairs to act as donating sites for the metals to grab on to.
In HN(CH2CH2NH2)2, each of the nitrogens has a lone pair which can be taken by the metal for bonding, making it tridentate.
Last edited by Ryan Yee 1J on Mon Dec 02, 2019 6:26 pm, edited 1 time in total.

Daniel Honeychurch1C
Posts: 109
Joined: Thu Jul 11, 2019 12:15 am

Re: polydentates

Postby Daniel Honeychurch1C » Mon Dec 02, 2019 6:25 pm

I think that you have to draw the Lewis structure of the ligands. A polydentate ligand will have multiple atoms with a lone pair and an orientation that allows for those atoms to bind with a central atom in two places (this means that the atoms with lone pairs are close to each other).


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