Polydentate

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Artin Allahverdian 2H
Posts: 76
Joined: Fri Sep 28, 2018 12:26 am

Polydentate

Postby Artin Allahverdian 2H » Fri Dec 07, 2018 9:11 pm

How can we tell if a ligand is polydentate so that we know whether to use bis-, tris-, tetrakis-, etc?

Krisdylle Repollo 4H
Posts: 33
Joined: Fri Sep 28, 2018 12:28 am

Re: Polydentate

Postby Krisdylle Repollo 4H » Fri Dec 07, 2018 9:18 pm

If the ligand has more than one binding site, then it is considered a polydentate.

Daniel Bowen 3I
Posts: 32
Joined: Fri Sep 28, 2018 12:24 am

Re: Polydentate

Postby Daniel Bowen 3I » Fri Dec 07, 2018 9:55 pm

So would anything that is not a monodentate be considered polydentate?

Joaquin Andrade
Posts: 31
Joined: Fri Sep 28, 2018 12:27 am

Re: Polydentate

Postby Joaquin Andrade » Fri Dec 07, 2018 11:11 pm

If a ligand can bond to the central metal atom with two atoms, it is bidentate. For three atoms, it is tridentate. For any more, the term polydentate is typically used.

Tyler Vu 4I
Posts: 30
Joined: Fri Sep 28, 2018 12:27 am

Re: Polydentate

Postby Tyler Vu 4I » Fri Dec 07, 2018 11:37 pm

Ligands with more than one bonded atom (central metal atom) are considered polydentate. The prefixes mentioned are used with composite ligand names to avoid confusion.

KHuang1L
Posts: 60
Joined: Fri Sep 28, 2018 12:19 am

Re: Polydentate

Postby KHuang1L » Sat Dec 08, 2018 11:15 am

In the ligand worksheet that is on the class website, remember that ox, en, dien, and edta are all polydentate. So you would use bis and tris instead of bi and tri.

julia_lok_2K
Posts: 56
Joined: Fri Sep 28, 2018 12:25 am

Re: Polydentate

Postby julia_lok_2K » Sat Dec 08, 2018 1:06 pm

Would carbonato also be considered a polydentate then?

yaosamantha4F
Posts: 31
Joined: Fri Sep 28, 2018 12:29 am

Re: Polydentate

Postby yaosamantha4F » Sat Dec 08, 2018 1:20 pm

I believe carbonato is bidentate!

Rehan Chinoy 1K
Posts: 67
Joined: Fri Sep 28, 2018 12:25 am

Re: Polydentate

Postby Rehan Chinoy 1K » Sat Dec 08, 2018 1:25 pm

It's also helpful to see if the molecule has nitrogen, oxygen, or sulfur atoms with lone pairs because these are common binding sites for ligands and thus would make the molecule polydentate.

Alexa_Henrie_1I
Posts: 61
Joined: Fri Sep 29, 2017 7:03 am

Re: Polydentate

Postby Alexa_Henrie_1I » Sat Dec 08, 2018 4:16 pm

Is dien tridentate or tetradentate?

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

Re: Polydentate

Postby 605168557 » Sat Dec 08, 2018 6:39 pm

based on the amount of bonding sites to the single central atom

Abby-Hile-1F
Posts: 46
Joined: Fri Sep 28, 2018 12:16 am

Re: Polydentate

Postby Abby-Hile-1F » Sat Dec 08, 2018 11:39 pm

How do you specify if a ligand is polydentate when naming the compound?


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