Article
Activation of Si-H and B-H bonds by Lewis acidic transition metals and p-block elements: same, but different
Author/s | Ríos Moreno, Pablo
Rodríguez, Amor Conejero, Salvador |
Department | Universidad de Sevilla. Departamento de Química Inorgánica |
Publication Date | 2022 |
Deposit Date | 2023-05-30 |
Published in |
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Abstract | In this Perspective we discuss the ability of transition metal complexes to activate and cleave the Si–H and B–H bonds of hydrosilanes and hydroboranes (tri- and tetra-coordinated) in an electrophilic manner, avoiding the ... In this Perspective we discuss the ability of transition metal complexes to activate and cleave the Si–H and B–H bonds of hydrosilanes and hydroboranes (tri- and tetra-coordinated) in an electrophilic manner, avoiding the need for the metal centre to undergo two-electron processes (oxidative addition/reductive elimination). A formal polarization of E–H bonds (E = Si, B) upon their coordination to the metal centre to form σ-EH complexes (with coordination modes η1 or η2) favors this type of bond activation that can lead to reactivities involving the formation of transient silylium and borenium/boronium cations similar to those proposed in silylation and borylation processes catalysed by boron and aluminium Lewis acids. We compare the reactivity of transition metal complexes and boron/aluminium Lewis acids through a series of catalytic reactions in which pieces of evidence suggest mechanisms involving electrophilic reaction pathways. |
Funding agencies | Ministerio de Ciencia e Innovación (MICIN). España Junta de Andalucía European Union (UE). H2020 |
Project ID. | PID2019-109312GB-I00
P20_00513 H 2020 Marie Skłodowska-Curie 841154 |
Citation | Ríos Moreno, P., Rodríguez, A. y Conejero, S. (2022). Activation of Si-H and B-H bonds by Lewis acidic transition metals and p-block elements: same, but different. Chemical Science, 13 (25), 7392-7418. https://doi.org/10.1039/D2SC02324E. |
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