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Updated: May 16, 2025

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments
Published on: May 11, 2017
Isolable Three-Coordinate Base-Stabilized Alumylene: A Precursor of Persistent Acceptor-Free Monomeric Aluminum Oxide
José Miguel León Baeza1,2, Huihui Xu1, Shintaro Takahashi1
1Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse, CNRS, 118 route de Narbonne, Toulouse, F-31062, France.
Abstract:
An isolable monomeric alumylene 2 stabilized by two donating ligands (phosphine and NHC) has been synthesized. Experimental and theoretical analysis confirm that the NHC ligand in 2 is labile and reversibly dissociates from the AlI center above -20 °C. Of particular interest, despite being thermodynamically stabilized by two donor ligands, alumylene complex 2 exhibits a high reactivity with a considerably higher nucleophilicity compared to the monophosphine-ligated complex 5. It is interesting to note that 2 reacts immediately with N2O at -90 °C, allowing the synthesis of bis-ligated aluminum oxide 15, which is stable up to -70 °C.
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