Wilkinson catalyst: Wilkinson's catalyst is a homogeneous hydrogenation catalyst

Wilkinson's catalyst is a homogeneous hydrogenation catalyst for alkenes and alkynes. Learn how it works, how to prepare it, and how it shows syn addition and diastereoselectivity in hydrogenation reactions. Discover what the Wilkinson catalyst is, its structure, mechanism, and key applications in organic chemistry—ideal for students. Wilkinson's catalyst is a coordination compound with the formula RhCl(PPh₃)₃, where rhodium is the central metal ion coordinated with three triphenylphosphine ligands and one chloride ion. This catalyst plays a significant role in facilitating various chemical reactions, particularly in the hydrogenation of alkenes and alkynes, making it valuable in organic synthesis and industrial processes. Definition of Wilkinson’s catalyst A coordination complex of rhodium with the formula [RhCl (PPh 3) 3] (Ph = phenyl) is known as Wilkinson’s catalyst. Its chemical name is chloridotris (triphenylphosphine)rhodium (I). It is a solid that has a reddish-brown appearance and is soluble in chlorinated solvents like dichloromethane and tetrahydrofuran, as well as hydrocarbon solvents like benzene. As a catalyst for the hydrogenation of alkenes, the substance is frequently utilized. It is so ...