Cr(II) and Cr(III) NCN pincer complexes: synthesis, structure, and catalytic reactivity.

ABSTRACT: The synthesis, characterization, and reactivity of several new Cr(II) and Cr(III) complexes featuring an NCN pincer ligand with an arene backbone connected to amine donors NEt₂ and NiPr₂ via CH₂-linkers is described. Reacting the in situ lithiated ligand precursor N(C-Br)N^CH2-Et with [CrCl₃(THF)₃] resulted in the formation of the Cr(III) complex trans-[Cr(κ³NCN-NCN^CH2-Et)(Cl)₂(THF)]. Upon reaction of lithiated N(C-Br)N^CH2-iPr with a suspension of anhydrous CrCl₂, the Cr(II) complex [Cr(κ²NC-NCN^CH2-iPr)₂] is formed featuring two NCN ligands bound in κ²NC-fashion. In contrast, when

SUBMITTER: Kafer MG 

PROVIDER: S-EPMC10620270 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature