October 23, 2020, 08:02:33 AM
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Topic: Why does EDTA not complex with single charge cations?  (Read 2488 times)

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Offline Strike

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Why does EDTA not complex with single charge cations?
« on: March 05, 2012, 10:43:34 PM »
EDTA can have up to 6 election pair donators and only complexes in a 1:1 ratio regardless of the charge of the cation.

It can complex with 2+ cations very easily, but why not 1+?

Offline Pradeep

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Re: Why does EDTA not complex with single charge cations?
« Reply #1 on: March 08, 2012, 06:34:22 AM »
I heard that, because +1 cations cant accommodate the electrons pairs received from the ligand without repulsion. But I am not very sure about the answer.

Offline Strike

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Re: Why does EDTA not complex with single charge cations?
« Reply #2 on: March 19, 2012, 05:09:45 PM »
Ah that makes sense.

I've also been told that EDTA binds to singly-charged cations weakly because they lack the orbitals into which electrons can be donated.

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