Name of Complex

How to write systematic name of each compound?

eg: k3[Fe(CN)6].?

Best Answer - Chosen by Voters

You have to know the rules in naming the complex ions.

1) the cation is named first followed by the anion.
2) for identical ligands, use di, tri, tetra ect
3) the names of negative ligands end with 'o'
4) the ligands are named first followed by the metal or metal ion.
5) if the complex is cation, the metal is named as usual name
6) if the complex is anion, the name of metal should end with -ate.
7) the oxidation state of metal in the complex should be stated in roman in a bracket

So, K3 is the cation. Just called it potassium.
No need to mention the number of potassium.

[Fe(CN)6]3- is anion.

Six CN- is called hexacyano

Fe3+ is called ferrate because it forms a negative complex.

So, the name is potassium hexacyanoferrate(III)