Polydentates

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veeksha25
Posts: 29
Joined: Wed Sep 21, 2016 2:56 pm

Polydentates

Postby veeksha25 » Thu Nov 17, 2016 1:58 pm

For carbonato, why is the molecule a bidentate and not a tetradentate even though there are four oxygens with lone pairs available for bonding?

Reem Abu-Shamma 2H
Posts: 23
Joined: Wed Sep 21, 2016 2:59 pm
Been upvoted: 1 time

Re: Polydentates

Postby Reem Abu-Shamma 2H » Thu Nov 17, 2016 7:14 pm

Carbonato does have 4 oxygen atoms with lone pairs but only 2 of them are attached to the C with single bonds. The single bonds allow the ligand to rotate and adjust around the transition metal to form coordinate bonds. The remaining 2 oxygens bind to the Carbon with double bonds and therefore don't have that flexibility and ability to interact with the TM, so carbonato is a bidentate (only 2 of the oxygens have single bonds).
Hope this helps!

KelseyKobayashi_2M
Posts: 21
Joined: Sat Jul 09, 2016 3:00 am

Re: Polydentates

Postby KelseyKobayashi_2M » Sat Nov 19, 2016 7:42 pm

Will we have to just memorize the number of lesser known ligands of the list in the course reader (ex. ethylenediamine, oxalato, etc.)?

Jeannie_Kim_1I
Posts: 23
Joined: Fri Jul 15, 2016 3:00 am

Re: Polydentates

Postby Jeannie_Kim_1I » Sat Nov 19, 2016 8:10 pm

I'm pretty sure we will need to know all of the ligands on that one page in the course reader.

swatiperepa
Posts: 19
Joined: Wed Sep 21, 2016 2:59 pm

Re: Polydentates

Postby swatiperepa » Sat Dec 03, 2016 11:10 pm

Does the name sulfato refer to both (SO4)2- and (OSO3)2-? I know for (NO2)2- there is a different name when the O is bonding to the transition metal instead of the N. Is sulfate like that as well?


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