Naming Ligands

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Josh_Zhong_1F
Posts: 34
Joined: Fri Sep 30, 2016 3:02 am

Naming Ligands

Postby Josh_Zhong_1F » Sat Nov 12, 2016 2:57 pm

Hi,

K3[CoF6], on the course reader, it is named: potassium-hexa-fluoro-cobaltate(III)

Why is it not: potassium-hexa-fluoro-cobalt(III)?
It does not have a negative charge in the complex...Don't we only add ate to complexes that have negative charge?


Thanks,

Armo_Derbarsegian_3K
Posts: 35
Joined: Sat Jul 09, 2016 3:00 am

Re: Naming Ligands

Postby Armo_Derbarsegian_3K » Sat Nov 12, 2016 3:04 pm

It is in an anionic complex.

K is a cation, so to make a neutral "salt" the [CoF6] must act as an anion and take a negative charge, hence cobaltate.

PriscillaMariscal_3F
Posts: 21
Joined: Fri Jul 15, 2016 3:00 am

Re: Naming Ligands

Postby PriscillaMariscal_3F » Sat Nov 12, 2016 4:01 pm

I need clarification on naming ligands; so it doesn't matter whether we use the new IUPAC Conventions to name ligands correct? Because the textbook problems use the new conventions.


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