Question:
Write the IUPAC names of the following coordination compound: \([Co(NH_3)_6]Cl_3\)
Write the IUPAC names of the following coordination compound: \([Co(NH_3)_6]Cl_3\)
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When naming coordination compounds, always use the prefix to describe the number of identical ligands and the oxidation state of the metal.
Updated On: Nov 29, 2025
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Solution and Explanation
Step 1: Identify the ligands. The ligand in this compound is ammonia \((NH_3)\), which is a neutral ligand.
Step 2: Identify the oxidation state of the metal. Cobalt (Co) in this compound is in the +3 oxidation state, because the three chloride ions \((Cl^-)\) each carry a -1 charge, and the six ammonia molecules are neutral. Thus, the total charge on the complex is +3.
Step 3: Write the IUPAC name. The IUPAC name is: Hexaamminecobalt(III) chloride.
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