## How to write structural formula order?

Chem_Mod
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### How to write structural formula order?

Question: As far as naming coordination compounds goes, is there a special sequence to writing out the structural formula when you have to consider two or more ligands? For example, if I am asked about pentaaminesulfattocobalt(III), could I just write the NH3 group, before the SO4^2-, or is there a special sequence?

Chem_Mod
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### Re: How to write structural formula order?

Answer: Anionic ligands should be listed first, other than that there is no conventional order.

RaquelAvalos1K
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### Re: How to write structural formula order?

Aren't neutral ligands before anionic ligands? Then the Transition metal?

Alexandra Bowling 1K
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### Re: How to write structural formula order?

I also thought that you're supposed to write down the neutral ligands before the anionic ones.

Justin Le 2I
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### Re: How to write structural formula order?

When writing out the formula, you write the cation transition metal first, then the anion ligands, then the neutral ligands.

michelleguan3a
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### Re: How to write structural formula order?

The textbook also says to list the ligands in alphabetical order in Toolbox 16.1 on page 683. Are we supposed to follow this method or the method of listing anionic ligands first and then neutral ones? Some websites online are saying to list the neutral ligands first and then anionic ones. Which method should we follow?

Websites saying to name neutral ligands before anionic ones:'
http://depts.washington.edu/chemcrs/bul ... _May28.pdf

http://www2.palomar.edu/users/ngeetha/1 ... lature.pdf

http://chemwiki.ucdavis.edu/Inorganic_C ... _Complexes