Diboryldiborenes: π‐Conjugated B4 Chains Isoelectronic to the Butadiene Dication

Research output: Contribution to journalArticle

  • External authors:
  • Alexander Hermann
  • Jessica Cid
  • James D. Mattock
  • Rian D. Dewhurst
  • Ivo Krummenacher
  • Alfredo Vargas
  • Holger Braunschweig

Abstract

sp2‐sp3 diborane species based on bis(catecholato)diboron and N‐heterocyclic carbenes (NHCs) are subjected to catechol/bromide exchange selectively at the sp3 boron atom. The reduction of the resulting 1,1‐dibromodiborane adducts led to reductive coupling and isolation of doubly NHC‐stabilized 1,2‐diboryldiborenes. These compounds are the first examples of molecules exhibiting π‐electron delocalization over an all‐boron chain.

Bibliographical metadata

Original languageEnglish
JournalAngewandte Chemie - International Edition
Volume57
Issue number32
Early online date13 Jun 2018
DOIs
Publication statusPublished - 6 Aug 2018