Facile insertion of alkynes into Ir–P (phosphine) and Ir–as (arsine) bonds: second and third alkyne addition to mononuclear iridium complexes

Abstract

Alkynes (HCCH, PhCCH) insert into Ir–P (phosphine) and Ir–As (arsine) bonds of [Ir(H)(CCPh)(L₃)(MPh₃)]⁺ and [[graphic omitted]H)(MeCN)(L₃)]⁺ in the presence of MPh₃, to produce [Ir(H)(CCPh)(L₃)(CHCHR–M + Ph₃)]⁺ and [[graphic omitted]H)(L₃(CHCHR–M⁺Ph₃)]⁺[R = H, Ph; L₃=(CO)(PPh₃)₂; M = P, As].