Synthesis and structural comparisons of NHC-alanes

Murphy, Fáinché and Kennedy, Alan R. and Weetman, Catherine E. (2022) Synthesis and structural comparisons of NHC-alanes. Inorganics, 11 (1). 13. ISSN 2304-6740 (https://doi.org/10.3390/inorganics11010013)

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Abstract

N-heterocyclic Carbenes (NHCs) are widely used in organometallic chemistry. Here, we examine the role of NHCs in the stabilisation of aluminium hydrides, AlH3, also known as alanes. This includes an assessment of the various synthetic strategies, comparisons of structural parameters and theoretical insight. Based on percent buried volume (%Vbur) parameters we report the largest and smallest NHC alanes to date, with noted differences in their observed stability in both the solution and solid state.