Double Deprotonation of CH 3 CN by an Iron-Aluminium Complex

Herein we present the first double deprotonation of acetonitrile (CH CN) using two equivalents of a bimetallic iron-aluminium complex. The products of this reaction contain an exceeding simple yet rare [CHCN] dianion moiety that bridges two metal fragments. DFT calculations suggest that the bonding...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2023-04, Vol.62 (16), p.e202219212
Main Authors: Stadler, Benedek, Gorgas, Nikolaus, White, Andrew J P, Crimmin, Mark R
Format: Article
Language:English
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Summary:Herein we present the first double deprotonation of acetonitrile (CH CN) using two equivalents of a bimetallic iron-aluminium complex. The products of this reaction contain an exceeding simple yet rare [CHCN] dianion moiety that bridges two metal fragments. DFT calculations suggest that the bonding to the metal centres occurs through heavily polarised covalent interactions. Mechanistic studies reveal the intermediacy of a monomeric [CH CN] complex, which has been characterised in situ. Our findings provide an important example in which a bimetallic metal complex achieves a new type of reactivity not previously encountered with monometallic counterparts. The isolation of a [CHCN] dianion through simple deprotonation of CH CN also offers the possibility of establishing a broader chemistry of this motif.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202219212