Contrasting reactivity of B–Cl and B–H bonds at [Ni(IMes)2] to form unsupported Ni-boryls

Literature Information

Publication Date 2023-12-18
DOI 10.1039/D3CC05369E
Impact Factor 6.222
Authors

Gabrielle Audsley, Ambre Carpentier, Anne-Frédérique Pécharman, James Wright, Thomas M. Roseveare, Ewan R. Clark, Stuart A. Macgregor, Ian M. Riddlestone


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Abstract

[Ni(IMes)2] reacts with chloroboranes via oxidative addition to form rare unsupported Ni-boryls. In contrast, the oxidative addition of hydridoboranes is not observed and products from competing reaction pathways are identified. Computational studies relate these differences to the mechanism of oxidative addition: B–Cl activation proceeds via nucleophilic displacement of Cl−, while B–H activation would entail high energy concerted bond cleavage.

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