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The IUPAC name of the complex [Ag(H2O)2][Ag(CN)2] is:
medium
Coordination Compounds
2022
chemistry
Dicyanidosilver(II) diaquaargentate(II)
Diaquasilver(II) dicyanidoargentate(II)
Dicyanidosilver(I) diaquaargentate(I)
Diaquasilver(I) dicyanidoargentate(I)
Explanation
To determine the IUPAC name of the complex [Ag(H2O)2][Ag(CN)2],
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Sign up / Login we need to follow the IUPAC nomenclature rules for coordination compounds.
1. Identify the cation and anion in the complex:
• The complex is composed of two parts:
[Ag(H2O)2]+ and
[Ag(CN)2]−. •
[Ag(H2O)2]+ is the cation, and
[Ag(CN)2]− is the anion.
2. Naming the cation:
• The cation
[Ag(H2O)2]+ contains silver coordinated with two water molecules.
• In naming, the ligands are named first followed by the metal.
• Water as a ligand is called 'aqua'.
• Since there are two water molecules, we use the prefix 'di'.
• The oxidation state of silver in
[Ag(H2O)2]+ is +1.
• Therefore, the cation is named 'diaquasilver(I)'.
3. Naming the anion:
• The anion
[Ag(CN)2]− contains silver coordinated with two cyanide ions.
• Cyanide as a ligand is called 'cyanido'.
• Since there are two cyanide ions, we use the prefix 'di'.
• The oxidation state of silver in
[Ag(CN)2]− is +1.
• Therefore, the anion is named 'dicyanidoargentate(I)'.
4. Combining the names:
• The cation name is written first followed by the anion name.
• Thus, the IUPAC name of the complex is 'Diaquasilver(I) dicyanidoargentate(I)'.
This corresponds to Option 4.