Vaska's complex is the trivial name for the chemical compound trans-chlorocarbonylbis(triphenylphosphine)iridium(I), which has the formula IrCl(CO)2. This square planar diamagnetic organometallic complex consists of a central iridium atom bound to two mutually trans triphenylphosphine ligands, carbon monoxide, and a chloride ion. The complex was first reported by J. W. DiLuzio and Lauri Vaska in 1961. Vaska's complex can undergo oxidative addition and is notable for its ability to bind to O2 reversibly. It is a bright yellow crystalline solid.
Read more about Vaska's Complex: Preparation, Reactions, Spectroscopy
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