New Search

Export article
Open Access

Das 1,3‐Bis(tricyanoboran)imidazolin‐2‐ylidenat‐Anion – Ein ditopischer dianionischer N‐heterocyclischer Carben‐Ligand

Ludwig Zapf, Udo Radius,
Published: 7 May 2021
 by  Wiley
Angewandte Chemie ; doi:10.1002/ange.202105529

Abstract: The 1,3‐bis(tricyanoborane)imidazolate anion 1 w as ob­tain­ed in high yield from lithium imidazolate and B(CN) 3 ‐pyridine adduct . Anion 1 is chemically very robust and thus allowed the iso­la­t­ion of the corres­ponding H 5 O 2 + salt. Furthermore, monoanion 1 served as starting species for the novel dianionic N‐heterocyclic carbene, 1,3‑bis­(tricyanoborane)­imidazoline‐2‐ylidenate anion 3 that acts as ditopic ligand via the carbene center and the cyano groups at boron. First reactions of this new NHC 3 with methyl iodide, elemental sele­nium, and [Ni(CO) 4 ] led to the methylated imidazolate ion 4 , the diani­onic selenium adduct 5 , and the dianionic nickel tricarbonyl complex 6 . These NHC derivatives provide a first insight into the electronic and steric properties of the dianionic NHC 3 . Especially the combination of properties such as double negative charge, different coordination sites, large buried volume and good s ‐donor and p ‐acceptor ability make NHC 3 a unique and promising liga nd and building block.
Keywords: N-heterocyclic carbene / anionic carbene / boron / cyanoborate / imidazolate

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

Share this article

Click here to see the statistics on "Angewandte Chemie" .
References (89)
    Back to Top Top