Two-Site O-H Addition to an Iridium Complex Featuring a Nonspectator Tricoordinate Phosphorus Ligand.

ABSTRACT: The synthesis and reactivity of an ambiphilic iridium complex IrCl(PPh₃)(L1) (1; L1 = P(N(o-N(2-pyridyl)C₆H₄)₂)) featuring a chelating nontrigonal phosphorus triamide ligand is reported. The tandem Lewis basic Ir and Lewis acidic P of 1 achieve a two-site oxidative addition of phenol giving the iridaphenoxyphosphorane species IrHCl(PPh₃)(L1^OPh) (3'). In contrast, reactions of 1 with benzenethiol and benzeneselenol do not engage L1 and instead proceed via metal-centered oxidative addition of the chalcogen-hydrogen bond. These findings establish metal-ligand cooperation involving nonspectator reactivity of tricoordinate phosphorus ligands.

SUBMITTER: Drance MJ 

PROVIDER: S-EPMC9662588 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature