[CoBr(NH3)5] SO4 name

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Chem_Mod
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[CoBr(NH3)5] SO4 name

Postby Chem_Mod » Wed Apr 17, 2013 5:39 pm

Question: The book names [CoBr(NH3)5] SO4 as pentaamminebromidocobalt (II) Sulfate. Since sulfate is 2- charged, NH3 is neutral and Br is 1- charged, shouldn't the oxidation number of cobalt be 3 rather than 2?

Chem_Mod
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Re: [CoBr(NH3)5] SO4 name

Postby Chem_Mod » Wed Apr 17, 2013 5:41 pm

Answer: Yes. You may find small mistakes as this throughout the book and it is good sign to notice these errors.

Maya Krishnan 3E
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Re: [CoBr(NH3)5] SO4 name

Postby Maya Krishnan 3E » Tue Nov 28, 2017 10:50 am

How does one deduce that the "bromo" will be "bromide" in the compound's name (pentaamminebromidocobalt (III) Sulfate)?

allyz1F
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Re: [CoBr(NH3)5] SO4 name

Postby allyz1F » Wed Nov 29, 2017 8:55 am

In the answer posted above they are using the "old" name for bromine as a ligand, but both bromo and bromido work for use in naming ligands. You would know to use either one simply because Br is found within the coordination sphere, or inside the brackets.


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