edta

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Yilun Ding
Posts: 31
Joined: Tue Jun 25, 2019 12:15 am

edta

Postby Yilun Ding » Wed Jul 24, 2019 5:14 pm

How many bonds can an edta ligand bond to a metal cation?

Kevin To 1B
Posts: 32
Joined: Sat Feb 02, 2019 12:15 am

Re: edta

Postby Kevin To 1B » Wed Jul 24, 2019 6:49 pm

Since EDTA is hexadentate, it can attach 6 times to the metal. Fun fact, this property allows it to displace molecules, hence why it is used in many buffers (e.g. SDS-PAGE).
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David Zhang 1B
Posts: 48
Joined: Mon Jun 17, 2019 7:23 am

Re: edta

Postby David Zhang 1B » Wed Jul 24, 2019 10:21 pm

It can bond with a metal at 6 different sites, creating the ring structure around the atom known as a chelate.

Chem_Mod
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Re: edta

Postby Chem_Mod » Fri Jul 26, 2019 10:20 am

EDTA is a hexadentate ligand that can form very stable complexes (usually octahedral structures) with most of the transition metals.The sodium salt of EDTA can be found in many commercial products. See the link below for more information about it:
https://www.chem.purdue.edu/gchelp/cchem/polys.html

AdamH02
Posts: 31
Joined: Mon Jun 17, 2019 7:23 am

Re: edta

Postby AdamH02 » Fri Jul 26, 2019 3:22 pm

It is hexadentate, so this means it can form 6 bonds.

Zachary Menz 1D
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Joined: Wed Nov 07, 2018 12:17 am

Re: edta

Postby Zachary Menz 1D » Sat Jul 27, 2019 9:03 pm

As we know, edta is hexadente, hexa = 6 bonds.

Bella Martin
Posts: 47
Joined: Wed Sep 21, 2016 2:57 pm

Re: edta

Postby Bella Martin » Tue Jul 30, 2019 10:21 pm

to what extent do you think we need to be familiar with edta for a final? It seems like a really tricky compound to incorporate into a question and i dont think we've had a lot of practice with it?

Ethan McCarthy 1F
Posts: 31
Joined: Wed Feb 27, 2019 12:17 am

Re: edta

Postby Ethan McCarthy 1F » Wed Jul 31, 2019 1:15 am

I think my TA said that we won't be expected to know the structure of edta but we should know the molecular formula (which should be: [C₁₀H₁₂O₈N₂]⁴⁻).


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