The Facile Synthesis of Exogenous Lewis-Base-Free Amidoalanes: A Structural Comparison.

ABSTRACT: A simple one-pot reaction of LiAlH₄, AlCl₃, and a secondary amine HNR₂ [R = Et, ⁱPr, ⁱBu, cyclo-C₆H₁₁, (CH₂)₄, and (CH₂)₅] in hydrocarbon solvents results in the formation of exogenous Lewis-base-free amidoalanes [H₂Al(NR₂)]_n (n = 2 or 3) as crystalline solids (35-85% yield). In the solid state (seven X-ray structures), all the amidoalanes exist as dimers, with the exception of the pyrrolidine-derived alane which exists as a trimer. As solids, these amidoalanes exhibit significant kinetic stability towards oxygen/moisture allowing the brief (ca. 5 min.) handling of [H₂Al(NⁱPr₂)]_2<

SUBMITTER: Hemsworth J 

PROVIDER: S-EPMC11901829 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature