Competition for Hydride Between Silicon and Boron: Synthesis and Characterization of a Hydroborane-Stabilized Silylium Ion

Overview

Journal Chemistry

Specialty Chemistry

Date 2021 Dec 17

PMID 34918852

Citations 3

Authors

Haopeng Gao

Robert Muller

Elisabeth Irran

Hendrik F T Klare

Martin Kaupp

Martin Oestreich

Affiliations

Soon will be listed here.

Abstract

Potent main-group Lewis acids are capable of activating element-hydrogen bonds. To probe the rivalry for hydride between silylium- and borenium-ion centers, a neutral precursor with the hydrosilane and hydroborane units in close proximity on a naphthalene-1,8-diyl platform was designed. Abstraction of one hydride leads to a hydroborane-stabilized silylium ion rather than a hydrosilane-coordinated borenium ion paired with [B(C F ) ] or [HCB Cl ] as counteranions. Characterization by multinuclear NMR spectroscopy and X-ray diffraction supported by DFT calculations reveals a cationic, unsymmetrical open three-center, two-electron (3c2e) Si-H-B linkage.

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Competition for Hydride Between Silicon and Boron: Synthesis and Characterization of a Hydroborane-Stabilized Silylium Ion.

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PMID: 34918852 PMC: 9303568. DOI: 10.1002/chem.202104464.

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