Migration of Hydride, Methyl, and Chloride Ligands between Al and M in (PAlP)M Pincer Complexes (M = Rh or Ir).

ABSTRACT: Protolysis of AlMe₃ or AlBuⁱ₃ with 2-diisopropylphosphinopyrrole (1) yields molecules containing two flanking phosphines and a central Al-Me (2-Me), Al-ⁱBu (2-ⁱBu), or Al-H (2-H) unit. The reactions of 2-Me with [L₂MCl]₂ (L = cyclooctene or 1/2 1,5-cyclooctadiene and M = Rh or Ir) in the presence of pyridine produces PAl^ClP pincer complexes (3-Rh and 3-Ir) with Al-Cl and M-Me bonds. The analogous reaction of a mixture of 2-ⁱBu and 2-H with [L₂MCl]₂ and pyridine resulted in the formation of analogous Rh-H (4-Rh) and Ir-H (4-Ir) complexes. Treatment of 3-Rh with NaBEt₃H produced compound 5-Rh with an Al-Me and a Rh-H bond; the analogous reaction of 3-Ir did not

SUBMITTER: Nguyen VT 

PROVIDER: S-EPMC10863399 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature