The Arene-Stabilized η5 -Pentamethylcyclopentadienyl Arsenic Dication [(η5 -Cp*)As(toluene)]2

Angewandte Chemie
Jiliang ZhouDouglas W Stephan

Abstract

Double chloride abstraction of Cp*AsCl2 gives the dicationic arsenic species [(η5 -Cp*)As(tol)][B(C6 F5 )4 ]2 (2) (tol=toluene). This species is shown to exhibit Lewis super acidity by the Gutmann-Beckett test and by fluoride abstraction from [NBu4 ][SbF6 ]. Species 2 participates in the FLP activation of THF affording [(η2 -Cp*)AsO(CH2 )4 (THF)][B(C6 F5 )4 ]2 (5). The reaction of 2 with PMe3 or dppe generates [(Me3 P)2 As][B(C6 F5 )4 ] (6) and [(σ-Cp*)PMe3 ][B(C6 F5 )4 ] (7), or [(dppe)As][B(C6 F5 )4 ] (8) and [(dppe)(σ-Cp*)2 ][B(C6 F5 )4 ]2 (9), respectively, through a facile cleavage of C-As bonds, thus showcasing unusual reactivity of this unique As-containing compound.

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Citations

Jan 18, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Omar CoughlinSophie L Benjamin
Sep 29, 2020·Chemical Communications : Chem Comm·Jiliang ZhouDouglas W Stephan
Oct 9, 2020·Angewandte Chemie·Roman G BelliLisa Rosenberg
Dec 2, 2020·Chemistry : a European Journal·Masato Sakabe, Soichi Sato
Jan 28, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Nayanthara AsokThomas Baumgartner
Aug 12, 2021·Chemical Communications : Chem Comm·Deepti SharmaAjay Venugopal
Dec 15, 2020·Journal of the American Chemical Society·Tobias HeitkemperChristian P Sindlinger
Sep 27, 2019·Journal of the American Chemical Society·Liu Leo LiuDouglas W Stephan
Jul 23, 2021·Chemistry : a European Journal·Dominik RaiserLars Wesemann
Jan 13, 2021·Journal of the American Chemical Society·Mujahuddin M SiddiquiHerbert W Roesky
Nov 18, 2021·Chemistry, an Asian Journal·Rahul DebMoumita Majumdar

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