iupac nomenclature

Question

The IUPAC name of [Pt(NH₃)₂Cl₂] is:

RankGuru · Accepted Answer

IUPAC naming rules for coordination compounds:
1. **Ligands** are named first in alphabetical order.
- $NH_3$ is called **ammine**.
- $Cl^-$ is called **chlorido**.
- Alphabetical sequence: ammine before chlorido.
2. **Numerical prefixes** ($di, tri,$ etc.) are used for multiple ligands (but ignored for alphabetizing).
- Two $NH_3 	o$ diammine; Two $Cl^- 	o$ dichlorido.
3. **Central metal** follows ligands. Since the complex is neutral, Platinum is used.
4. **Oxidation state** is in Roman numerals: $x + 2(0) + 2(-1) = 0 \implies x = +2$.
- Result: **Diamminedichloridoplatinum(II)**.

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