What question did this study set out to answer?

The study aims to investigate the synthesis of aluminum dihydride and its reactivity with various bonds.

April 10, 2026Open Access

Aluminum dihydride from E( iv ) precursors (E = Si, Ge) and its bond-activation reactivities

Key Points

The study aims to investigate the synthesis of aluminum dihydride and its reactivity with various bonds.
Synthesized aluminum dihydride from aminotroponiminato-stabilized silane precursors
Utilized salt-metathesis reaction with aluminum(III) dichloride
Characterized compounds using multinuclear NMR spectroscopy and single-crystal X-ray diffraction
Successfully isolated aluminum dihydride compound
Demonstrated activation of C=S and P=Se bonds
Yielded aluminum(III) μ-sulphide and μ-selenide dimers

Abstract

A distinctive synthetic route has been demonstrated in which the aminotroponiminato (ATI)-stabilized aluminum dihydride complex (ATI)AlH2 was prepared from a (ATI)SiHCl2 precursor. (ATI)AlH2 was also isolated from aluminum(III) dichloride (ATI)AlCl2 via salt-metathesis reaction. Subsequent reaction with the ATIH ligand enabled the isolation of the N-tetracoordinated (ATI)Al(III)-complex via aluminum monohydride (ATI)AlH(ATI) intermediate. The dihydride compound was found to activate CS (in CS2) and PSe (in Ph3PSe) bonds yielding the aluminum(III) μ-sulphide and μ-selenide dimer (ATI)Al(μ-S)2 and (ATI)Al(μ-Se)2, respectively. All compounds were characterized using multinuclear NMR spectroscopy and single-crystal X-ray diffraction.

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Aluminum dihydride from E( iv ) precursors (E = Si, Ge) and its bond-activation reactivities

Key Points

Abstract

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