Iridium nitrosyl complexes: insertion of NO into a methinic C–H bond promoted by nitriles. X-Ray crystal structure of [Ir{(2-C5H4N)–CHN–NC(NOH)–(2-C5H4N)}-{Me(EtO)CNH}(PPh3)2][PF6]2

Abstract

A C–N bond is formed by insertion of co-ordinated NO into a C–H bond of the –HCN–NCH– moety of 2-pyridinecarbaldehyde azine (paa) in [Ir(NO)(paa)(PPh₃)₂]²⁺, promoted by nitriles, as shown by an X-ray structure of the complex [Ir{(2-C₅H₄N)–CHN–NC(NOH)–(2-C₅H₄N)}{Me(EtO)CNH}(PPh₃)₂][PF₆]₂.