Question

Write the IUPAC name of complex compound \( K_3[Cr(C_2O_4)_3] \).

Hint:

When naming coordination compounds, always start with the cationic part, followed by the anionic part and the oxidation state of the metal.

Answer 1

Step 1: Identify the components of the complex.
The complex consists of: - Chromium (\( Cr \)) as the central metal ion. - Oxalate (\( C_2O_4^{2-} \)) as the ligand, with three oxalate ions attached to the chromium ion.
Step 2: Name the complex according to IUPAC rules.
- The name of the oxalate ion is oxalato. - The chromium ion is in the +3 oxidation state (since \( K_3 \) indicates a charge of +3). - The complex is an anionic complex, and the counterion \( K^+ \) is used to balance the charge. The IUPAC name of the complex is: \[ \text{Potassium tris(oxalato)chromate(III)} \]
Final Answer: The IUPAC name of \( K_3[Cr(C_2O_4)_3] \) is Potassium tris(oxalato)chromate(III).
Final Answer: \[ \boxed{\text{Potassium tris(oxalato)chromate(III)}} \]