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Dibora[2]ferrocenophane: a carbene-stabilized diborene in a strained cis-configuration

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posted on 2023-06-09, 04:10 authored by Holger Braunschweig, Ivo Krummenacher, Crispin Lichtenberg, James D Mattock, Marius Schäfer, Uwe Schmidt, Christoph Schneider, Thomas Steffenhagen, Stefan Ullrich, Alfredo VargasAlfredo Vargas
Unsaturated bridges that link the two cyclopentadienyl ligands together in strained ansa metallocenes are rare and limited to carbon-carbon double bonds. The synthesis and isolation of a strained ferrocenophane containing an unsaturated two-boron bridge, isoelectronic with a C=C double bond, was achieved by reduction of a carbene-stabilized 1,1’-bis(dihaloboryl)ferrocene. A combination of spectroscopic and electrochemical measurements as well as density functional theory (DFT) calculations was used to assess the influence of the unprecedented strained cis configuration on the optical and electrochemical properties of the carbene-stabilized diborene unit. Initial reactivity studies show that the dibora[2]ferrocenophane is prone to boron-boron double bond cleavage reactions.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Angewandte Chemie International Edition

ISSN

1521-3773

Publisher

Wiley

Issue

3

Volume

56

Page range

889-892

Department affiliated with

  • Chemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-12-22

First Open Access (FOA) Date

2017-12-21

First Compliant Deposit (FCD) Date

2016-12-22

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