Order of Ligand Naming

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Kirsty Star 2H
Posts: 48
Joined: Fri Sep 28, 2018 12:24 am

Order of Ligand Naming

Postby Kirsty Star 2H » Sat Dec 01, 2018 4:26 pm

Is there a rule for which ligand should be named first?

Saman Andalib 1H
Posts: 73
Joined: Fri Sep 28, 2018 12:16 am

Re: Order of Ligand Naming

Postby Saman Andalib 1H » Sat Dec 01, 2018 4:43 pm

You name the ligands in a coordination compound in alphabetical order.

Kirsty Star 2H
Posts: 48
Joined: Fri Sep 28, 2018 12:24 am

Re: Order of Ligand Naming

Postby Kirsty Star 2H » Mon Dec 03, 2018 1:20 pm

Thank you!

lindsey_ammann_4E
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

Re: Order of Ligand Naming

Postby lindsey_ammann_4E » Mon Dec 03, 2018 1:46 pm

Saman Andalib 1A wrote:You name the ligands in a coordination compound in alphabetical order.


To follow up, is it alphabetical order by prefix or by the names of the ligands?

katietietsworth_3c
Posts: 31
Joined: Fri Sep 28, 2018 12:24 am

Re: Order of Ligand Naming

Postby katietietsworth_3c » Mon Dec 03, 2018 1:47 pm

lindsey_ammann_3E wrote:
Saman Andalib 1A wrote:You name the ligands in a coordination compound in alphabetical order.


To follow up, is it alphabetical order by prefix or by the names of the ligands?


It is alphabetical order by the name of the element, so monochloro would come before dioxide. Hope that helps.

Fanny Lee 2K
Posts: 73
Joined: Fri Sep 28, 2018 12:29 am

Re: Order of Ligand Naming

Postby Fanny Lee 2K » Mon Dec 03, 2018 2:58 pm

With a transition metal, it appears first in the coordination compound formula. However when you name it with the ligands, it appears last, after the ligands alphabetically.

Vicky Lu 1L
Posts: 60
Joined: Fri Sep 28, 2018 12:18 am

Re: Order of Ligand Naming

Postby Vicky Lu 1L » Mon Dec 03, 2018 10:57 pm

If there are multiple ligands, the order the ligands are named should follow alphabetical order. If the coordinate compound is PtCl2(NO2)2, then the Cl would be named before the NO2.


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