New Gallium Hydrides with Dianionic Acenaphthene-1,2-Diimine Ligands

摘要

Heating of a solution of [(Dpp-bian)GaH2] (I) (Dpp-bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene) in pyridine leads to elimination of a hydrogen atom and reduction of the diimine ligand to dianion, resulting in the complex [(Dpp-bian)GaH(Py)] (II). The reaction ofIwith 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (i-Pr(2)Im(Me)) is accompanied by a similar process, with the reaction product being identified as [(Dpp-bian)GaH(i-Pr(2)Im(Me))] (III). Diamagnetic derivativesIIandIIIwere characterized by(1)H NMR spectroscopy. The molecular structure of compoundIIwas established by X-ray diffraction (CIF file CCDC no. 1973549).