Solvent-Dependent Oxidative Addition and Reductive Elimination of H₂ Across a Gallium-Zinc Bond.

ABSTRACT: H₂ adds reversibly across the metal-metal bond of [(BDI)Ga(H)-Zn(tmeda)(thf)][BAr₄ ^F ] (BDI=[HC{C(CH₃ )N(2,6-iPr₂ -C₆ H₃ )}₂ ]^- , TMEDA=N,N,N',N'-tetramethylethylenediamine, BAr₄ ^F- =[B(C₆ H₃ -3,5-(CF₃ )₂ )₄ ]^- ). Due to the stabilising effect of solvent coordination, hydrogenation products [(BDI)GaH₂ ] and [(tmeda)ZnH(thf)][BAr₄ ^F ] are favoured in THF solution, but THF-free mixtures of [(BDI)GaH₂ ] and [(tmeda)ZnH(OEt₂ )][BAr₄ ^F ] are predisposed towards entropically driven dehydrogenation to [(BDI)Ga(H)-Zn(tmeda)][BAr₄

SUBMITTER: Morris LJ 

PROVIDER: S-EPMC9544028 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature