Question:
Write IUPAC name of the following complexes: (x) \([Co(NH_3)_5Cl]Cl_2\) , (y) \(K_2[Ni(CN)_4]\)
Write IUPAC name of the following complexes: (x) \([Co(NH_3)_5Cl]Cl_2\) , (y) \(K_2[Ni(CN)_4]\)
Updated On: Sep 3, 2025
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Solution and Explanation
(x) \([Co(NH_3)_5Cl]Cl_2\):
The IUPAC name of this complex is pentaamminechloridocobalt(III) chloride.
Explanation:
- The complex ion \([Co(NH_3)_5Cl]^{2+}\) consists of cobalt as the central metal ion, five ammonia molecules (NH₃) and one chloride ion (Cl) as ligands.
- The oxidation state of cobalt is +3, and the complex is neutralized by two chloride ions (Cl⁻) outside the coordination sphere.
(y) \(K_2[Ni(CN)_4]\):
The IUPAC name of this complex is potassium tetracyanidonickelate(II).
Explanation:
- The complex ion \([Ni(CN)_4]^{2-}\) consists of nickel as the central metal ion, four cyanide (CN⁻) ligands.
- The oxidation state of nickel is +2, and the complex is neutralized by two potassium ions (K⁺).
(c)(ii)
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