Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2024 May 21;63(21):e202401681.
doi: 10.1002/anie.202401681. Epub 2024 Apr 16.

Lewis Acid Decorated Hexacyanodiborane(6) Dianion

Ludwig Zapf  1 , Maik Finze  1
Affiliations

Lewis Acid Decorated Hexacyanodiborane(6) Dianion

Ludwig Zapf et al. Angew Chem Int Ed Engl. .

Abstract

First examples of diborane(6) dianions decorated with weakly coordination B(C6F5)3 (BCF) groups and SiEt3 + moieties have been synthesized demonstrating the synthetic potential of the [B2(CN)6]2- dianion. [B2{CNB(C6F5)3}6]2- (1) was isolated as potassium and tetrabutylammonium salt. 1 is a rare example for a weakly coordinating dianion and it was used for the stabilization of the carbocation [Ph3C]+ and the oxonium acid [H(OEt2)2]+. Reaction of [Ph3C]21 with HSiEt3 resulted in the silylated neutral diborane(6) [B2{CNB(C6F5)3}4(CNSiEt3)2] (2) in which two BCF groups have been selectively replaced by SiEt3 + substituents, underscoring the stability and chemical versatility of the [B2(CN)6]2- dianion. The chemical properties and physicochemical data of 1 and 2 provide insight into electronic, coordinating, and steric properties of theses novel diborane(6) compounds.

Keywords: Lewis acids; boranes; borates; diborane(6); weakly coordinating anions.

PubMed Disclaimer

References

    1. None
    1. H. Li, G. Xu, S. Li, Y. Wu, Z. Lu, Chem. Rec. 2023, 23, e202300238;
    1. H.-J. Himmel, Eur. J. Inorg. Chem. 2018, 2018, 2139–2154.
    1. None
    1. E. C. Neeve, S. J. Geier, I. A. I. Mkhalid, S. A. Westcott, T. B. Marder, Chem. Rev. 2016, 116, 9091–9161;

LinkOut - more resources