Question

The IUPAC name of the Wilkinson catalyst $\left[RhCl{\left(PP{h}_3\right)}_3\right]$ is :

• A. Chlorotris(triphenylphosphine)rhodium(I)
• B. Chlorotris(triphenylphosphine)rhodium(IV)
• C. Chlorotris(triphenylphosphine)rhodium(0)
• D. Chlorotris(triphenylphosphine)rhodium(VI)

Answer 1

The correct option is A Chlorotris(triphenylphosphine)rhodium(I)

Central atom is `Rh`
Ligands:
1. $C{l}^{-}$: Chloride
2. $PP{h}_3$ : triphenylphosphine
Balancing the charge on the complex, we can see that Rhodium is in the oxidation state of `+1`.
Putting things together, we can write the final name as Chlorotris(triphenylphosphine)rhodium(I)