Multiple choice IUPAC Ligands Coordination compound Polydentate

Which one of the following is the correct IUPAC name of the given coordination compound? [Pt(NH₃)₂Cl(NH₂CH₃)]Cl

  1. Diamminechloridomethylammineplatinum(II)

  2. Diamminechloridomethylammineplatinum(I)

  3. Diamminemethylamminechloridoplatinum(I)

  4. Methylamminediamminechloridoplatinum(I)
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A Correct answer
Explanation

According to IUPAC nomenclature rules for coordination compounds, ligands are named alphabetically before the metal atom. The ligands are diammine (from NH3), chlorido (from Cl-), and methylammine (from CH3NH2). Alphabetical order gives ammine before chlorido, then methylammine. Thus, the name is Diamminechloridomethylammineplatinum(II).

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