Mechanism of the reaction of hydrogen and phenylacetylene with IrH(CO)(PPh3)3. Kinetic evidence for the co-ordinatively unsaturated IrH(CO)(PPh3) species in solution as reactive intermediates and for the reaction of hydrogen with the co-ordinatively saturated IrH(CO)(PPh3)3 species

Abstract

A kinetic study of the reaction between IrH(CO)(PPh₃)₃ and H₂ or PhCCH provided evidence for the existence of the co-ordinatively unsaturated intermediate IrH(CO)(PPh₃) in solution, as well as a direct attack of hydrogen on the co-ordinatively saturated IrH(CO)(PPh₃)₃.