Divalent Ytterbium Iodide Supported by β-Diketiminato Based Tridentate Ligand: Synthesis, Structure and Small Molecule Activation

摘要

Divalent ytterbium iodide[LYb(μ-I)(THF)]2 (1;L =[MeC(NDIPP)CHC(Me)NCH2CH2NMe2]-,DIPP =2,6-(iPr)2C6H3) was synthesized and its reactivity was studied.Complex 1 was synthesized by salt metathesis of YbI2(THF)2 with the potassium salt of ligand (KL) in high yield.In the reactions with trimethylsilyl azide,azobenzene,sulfur and diphenyl disulfide,complex 1 acts as a 2e reductant.In the reaction with CO2,the central carbon atom of β-diketiminato backbone in 1 nucleophilically attacks the CO2 molecule to give a divalent ytterbium carboxylate.