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Issue 1, 2016
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Carbene-induced synthesis of the first borironium cations using the [(η5-C5Me5)Fe(CO)2] anion as an unlikely leaving group

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Abstract

Reaction of N-heterocyclic carbenes with ferroborirene complex [{(η5-C5Me5)Fe(CO)2}{BC2(SiMe3)2}] results in heterolytic Fe–B bond cleavage, yielding borironium ions, a new class of boron-containing heterocycles. The reaction rests on the surprising ability of the reactive [(η5-C5Me5)Fe(CO)2] anion to act as a leaving group. The properties of these species were investigated by multinuclear NMR spectroscopy, as well as single-crystal X-ray diffraction.

Graphical abstract: Carbene-induced synthesis of the first borironium cations using the [(η5-C5Me5)Fe(CO)2]− anion as an unlikely leaving group

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Publication details

The article was received on 07 Sep 2015, accepted on 22 Oct 2015 and first published on 29 Oct 2015


Article type: Communication
DOI: 10.1039/C5CC07503C
Citation: Chem. Commun., 2016,52, 183-185

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    Carbene-induced synthesis of the first borironium cations using the [(η5-C5Me5)Fe(CO)2] anion as an unlikely leaving group

    H. Braunschweig, R. D. Dewhurst and K. Ferkinghoff, Chem. Commun., 2016, 52, 183
    DOI: 10.1039/C5CC07503C

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