Dibora[2]ferrocenophane: A Carbene-Stabilized Diborene in a Strained cis-Configuration.

نویسندگان

  • Holger Braunschweig
  • Ivo Krummenacher
  • Crispin Lichtenberg
  • James D Mattock
  • Marius Schäfer
  • Uwe Schmidt
  • Christoph Schneider
  • Thomas Steffenhagen
  • Stefan Ullrich
  • Alfredo Vargas
چکیده

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.

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عنوان ژورنال:
  • Angewandte Chemie

دوره 56 3  شماره 

صفحات  -

تاریخ انتشار 2017