Efficient Synthesis of cis ‐[IrCl 2 (CO) 2 ] – Using Formic Acid as the Carbonylating Agent

The reaction of hydrated iridium chloride with formic acid in refluxing ethoxyethanol afforded by an efficient way the known iridium carbonyl chlorido complex cis ‐[IrCl 2 (CO) 2 ] – . The latter species was isolated and characterized as its corresponding PPN salt (PPN + = bis(triphenylphosphane)iminium cation). The molecular structure of PPN[IrCl 2 (CO) 2 ] ( 1 ) was confirmed by X‐ray diffraction.