Question

The correct IUPAC name of the complex \([Ag(NH_3)_2][Ag(CN)_2]\) is named as

• A. diamminesilver(II) dicyanoargentate(II)
• B. diamminesilver(II) dicyanoargentate(I)
• C. diamminesilver(I) dicyanidoargentate(I)
• D. diaminesilver(I) dicyanoargentate(I)

Hint:

Remember:
- For NH\(_3\), use 'ammine' (double m).
- For negative complex ions, the metal name ends in '-ate' (Argentate for Silver, Ferrate for Iron, Cuprate for Copper).

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
In coordination compounds where both cation and anion are complexes, we name the cation first followed by the anion. The oxidation state of the metal is indicated in Roman numerals.

Step 2: Detailed Explanation:
1. Cation: \([Ag(NH_3)_2]^+\). The ligand is ammonia, named as 'ammine' (with double 'm'). Two ligands make it 'diammine'. The metal is silver with oxidation state +1. Name: diamminesilver(I).
2. Anion: \([Ag(CN)_2]^-\). The ligand is cyanide, named as 'cyanido' in current IUPAC (or 'cyano'). Since it's an anion, the metal name ends in '-ate'. Silver becomes 'argentate'. Oxidation state is +1. Name: dicyanidoargentate(I).
3. Combined Name: diamminesilver(I) dicyanidoargentate(I).

Step 3: Final Answer:
The IUPAC name is diamminesilver(I) dicyanidoargentate(I).