Which of the following is called Wilkinson's catalyst ? (a) \( \left.\left[\mathrm{Ph}_{3} \math...

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Which of the following is called Wilkinson's catalyst ?
(a) \( \left.\left[\mathrm{Ph}_{3} \mathrm{P}\right)_{3} \mathrm{RhCl}\right] \)
(b) \( \mathrm{TiCl}_{4}+\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)_{3} \mathrm{Al} \)
\( \mathrm{P} \)
(c) \( \left(\mathrm{C}_{2} \mathrm{H}_{5}\right)_{4} \mathrm{~Pb} \)
(d) \( \left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right] \)
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