TM naming

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Hector Acosta Discussion 1H
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

TM naming

Postby Hector Acosta Discussion 1H » Sat Nov 18, 2017 12:55 am

Can someone please explain in the most simple form possible on how we name these compounds.

Scott Chin_1E
Posts: 55
Joined: Sat Jul 22, 2017 3:00 am

Re: TM naming

Postby Scott Chin_1E » Sat Nov 18, 2017 11:38 am

(Greek prefix) + Ligand names in alphabetical order (that are bonded to the TM) + TM cation + (Roman Numeral) + (if there are anions within the coordination complex we will add a -o) + (if there are anions bonded to the coordination complex) the anion name + (Greek Prefix) + Hydrate.

For example:


The ligand name that is bonded to the TM is called Ammine. Since there are 5 Ammines bonded to the Cobalt (TM) we would use the Greek prefix "Penta-". Next we see that there is a Chlorine bonded to the Coordination Complex so we will drop the -ine from Chlorine and add "-o" to make "Chloro-". This name would become "Chlorocobalt". From the charges of each compound, we can deduce that the oxidation number of Cobalt is 2+ so we will use the Roman Numerals (II). Finally, since there is a Chlorine atom and 2 water atoms bonded, to the complex, we will use the name "Chloride Dihydrate".

The resulting name is:
Pentaammine Chlorocobalt (II) Chloride Dihydrate

Kaelie Blanes-Ronda 2L
Posts: 42
Joined: Fri Sep 29, 2017 7:07 am
Been upvoted: 1 time

Re: TM naming

Postby Kaelie Blanes-Ronda 2L » Sun Nov 19, 2017 4:17 pm

There are two naming conventions: Ex. the older naming convention would use "cyano" and the newest IUPAC naming rules use "cyanido." You should be familiar with both and both will be acceptable on any exams.


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