Ligands  [ENDORSED]

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Postby danny_nguyen_3C » Mon Nov 14, 2016 7:33 pm

How does one determine whether a ligand is monodentatate or polydentate? Or do we just have to memorize which one is which?

Monica Habashy 3A
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Re: Ligands

Postby Monica Habashy 3A » Mon Nov 14, 2016 9:12 pm

Most of the time you can tell from the charge. Like F- Cl- OH- etc are all monodentates. SO42- is bidentate etc. Ethylenediammine is a bidentate cause there are 2 nitrogens each with one lone pair. So looking at the number of nitrogens can be a good indication of the number of bonds it can form.

Shushanna S 3F
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Re: Ligands  [ENDORSED]

Postby Shushanna S 3F » Mon Nov 14, 2016 9:14 pm

You can figure out by drawing a complete Lewis structure, but since that takes a while--especially for something like diethylenetriamine (it makes three bonds, so it's tridentate), it's better just to memorize the chart of ligands he gave us.

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