Reductive Dehydrogenation of a Stannane via Multiple Sn−H Activation by Frustrated Lewis Pairs

A bulky substituted stannane Ar*SnH3 (Ar*=2,6‐(2′,4′,6′‐triisopropylphenyl)phenyl) was treated with the well‐known frustrated Lewis pair (FLP) PtBu3/B(C6F5)3 in varying stoichiometries. To some degree, hydride ion and adduct formation is observed, leading to [Ar*SnH2(PtBu3)]+ which is rather unreact...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2017-02, Vol.56 (8), p.2198-2202
Main Authors: Sindlinger, Christian P., Aicher, Frederik S. W., Schubert, Hartmut, Wesemann, Lars
Format: Article
Language:English
Subjects:
Activation
cations
Dehydrogenation
E−H activation
frustrated Lewis pair
Hydrides
Hydrogen storage
stannylenes
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Summary:A bulky substituted stannane Ar*SnH3 (Ar*=2,6‐(2′,4′,6′‐triisopropylphenyl)phenyl) was treated with the well‐known frustrated Lewis pair (FLP) PtBu3/B(C6F5)3 in varying stoichiometries. To some degree, hydride ion and adduct formation is observed, leading to [Ar*SnH2(PtBu3)]+ which is rather unreactive toward further dehydrogenation. In a competing process, the FLP proved to be capable of completely striping‐off hydrogen and hydrides to generate the first cationic phosphonio‐stannylene [Ar*Sn(PtBu3)]+. This behavior provides insight into the activation/ion mechanism processes involved in these Group 14 hydride derivatives. You can't leave your H on! Frustrated Lewis pairs are shown to completely hydrogen from a monoorgano stannane.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201610254