Question:
The IUPAC name of the complex [Pt(NH$_{3}$)$_{2}$Cl(NO$_{2}$)] is:
The IUPAC name of the complex [Pt(NH$_{3}$)$_{2}$Cl(NO$_{2}$)] is:
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“Amine” has double m (ammine). Ligands are always written in alphabetical order, not by number.
Updated On: Jun 10, 2026
- Diamminochloronitroplatinum(II)
- Diamminochloronitrito-N-platinum(II)
- Diamminechloronitrito-N-platinum(II)
- Diamminechloronitro-N-platinum(II)
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The Correct Option is C
Solution and Explanation
Concept:
IUPAC naming of coordination compounds follows ligand naming (alphabetical order), oxidation state calculation, and correct identification of linkage isomerism.
Step 1: Identify ligands
• 2 ammine (NH$_3$) → neutral ligand
• 1 chloro (Cl$^{-}$)
• 1 nitrito-N (NO$_2^{-}$ bound through nitrogen)
Step 2: Oxidation state of Pt Let oxidation state = x: \[ x + 0 - 1 - 1 = 0 \Rightarrow x = +2 \]
Step 3: Arrange ligands alphabetically Ammine (A), Chloro (C), Nitrito-N (N) Thus name: Diamminechloronitrito-N-platinum(II) Hence option (C).
Step 1: Identify ligands
• 2 ammine (NH$_3$) → neutral ligand
• 1 chloro (Cl$^{-}$)
• 1 nitrito-N (NO$_2^{-}$ bound through nitrogen)
Step 2: Oxidation state of Pt Let oxidation state = x: \[ x + 0 - 1 - 1 = 0 \Rightarrow x = +2 \]
Step 3: Arrange ligands alphabetically Ammine (A), Chloro (C), Nitrito-N (N) Thus name: Diamminechloronitrito-N-platinum(II) Hence option (C).
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