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Naming ions

Posted: Wed Dec 03, 2014 4:00 pm
by Amy Luong 1L
When do we know whether or not to include "ion" at the end of the coordination compound?

Re: Naming ions

Posted: Wed Dec 03, 2014 4:47 pm
by Alan Begian 3F
When a complex has an overall negative or positive charge, "ion" is written after it. This is not needed if it is neutral or part of a coordination compound

Ex: [Cr(OH)4]-

Name: tetrahydroxochromate(III) ion

Re: Naming ions

Posted: Wed Dec 03, 2014 6:13 pm
by Evan Huang 1L
It can also be a complex with an overall positive charge, for example

[Ni(en)3]3+

has the name: Triethylenediamine Nickel (III) ion

Re: Naming ions

Posted: Wed Dec 03, 2014 10:28 pm
by Justin Le 2I
Evan Huang 3L wrote:It can also be a complex with an overall positive charge, for example

[Ni(en)3]3+

has the name: Triethylenediamine Nickel (III) ion


The name should actually be tris(ethylenediamine)nickel(III) ion because en is bidentate and there are three of them.