Question

IUPAC name of [Co(NH3)3]Cl3​

Answer 1

triamminecobalt(iii) Chloride

Answer 2

Hexaammine cobalt ( III ) chloride.is the name IUPAC name of the given compound.

• Name the cation first.

• Write the name of the ligand in the cation first, with the prefix "number of ligands."

• Hexaammine Cobalt (III) Chloride is the IUPAC name since CO has an oxidation state of 3.

The rules used in the nomenclature of compounds are:

1. Name the cation first, then the anion if the compound is a salt (like any salt).
2. Name the ligands before the metal when naming a complex ion.
3. Rather than ending in -ide, anionic ligands end in -o.
4. A handful of neutral ligands have unique names.
5. A complex has a single word for its name.
6. Use the proper Greek prefix to indicate the number of ligands, such as di-, tri-, tetra-, Penta-, or Hexa-.
7. Sort the ligands by alphabet.
8. To indicate the metal's oxidation state, place a Roman numeral in brackets immediately after the name of the metal (no spaces).
9. Use the suffix -ate if the metal is an anionic complex ion.
10. Use the alternative prefixes bis- (2), tris- (3), tetrakis- (4), pentakis- (5), hexakis- (6), etc. to identify the number of each ligand if it is polydentate or if its name has a Greek prefix.

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