Question:
Which of the following is the correct IUPAC name of the complex [Ni(PPh\(_3\))\(_3\)(H\(_2\)O)\(_3\)]Cl\(_2\)?
Which of the following is the correct IUPAC name of the complex [Ni(PPh\(_3\))\(_3\)(H\(_2\)O)\(_3\)]Cl\(_2\)?
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In IUPAC naming of coordination compounds, ligands are named first, followed by the metal with its oxidation state in parentheses.
Updated On: Jan 28, 2026
- Triaquatris(triphenylphosphine)nickel(II) chloride
- Tris(triphenylphosphine)triaquanickel(II) chloride
- Triaquatris(triphenylphosphine)nickelate(II) chloride
- Triaquatris(triphenylphosphine)nickel(III) chloride
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The Correct Option is A
Solution and Explanation
Step 1: Naming the complex.
The given complex is a coordination compound with three triphenylphosphine (PPh\(_3\)) ligands, three water (H\(_2\)O) ligands, and two chloride ions. Step 2: Apply IUPAC naming conventions.
- "Tri" denotes three of each ligand. - "Aqua" is used for water molecules as ligands, and "phosphine" is used for the PPh\(_3\) ligand. - The metal is nickel, and it is in the +2 oxidation state, so we write "nickel(II)". - The chloride ions are counter ions, and they are added at the end. Step 3: Conclusion.
Thus, the correct name is "Triaquatris(triphenylphosphine)nickel(II) chloride". Final Answer: \[ \boxed{\text{Triaquatris(triphenylphosphine)nickel(II) chloride}}. \]
The given complex is a coordination compound with three triphenylphosphine (PPh\(_3\)) ligands, three water (H\(_2\)O) ligands, and two chloride ions. Step 2: Apply IUPAC naming conventions.
- "Tri" denotes three of each ligand. - "Aqua" is used for water molecules as ligands, and "phosphine" is used for the PPh\(_3\) ligand. - The metal is nickel, and it is in the +2 oxidation state, so we write "nickel(II)". - The chloride ions are counter ions, and they are added at the end. Step 3: Conclusion.
Thus, the correct name is "Triaquatris(triphenylphosphine)nickel(II) chloride". Final Answer: \[ \boxed{\text{Triaquatris(triphenylphosphine)nickel(II) chloride}}. \]
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