Summary.
Synthesis, characterization, and solid state X-ray crystallographic structures for 12-Pn-6 complexes derived from carbene 4,5-dichloro-1,3-dimesitylimidazol-2-ylidene and phosphorus, arsenic, or antimony pentafluoride are reported. The adducts show octahedral geometries at the pnictogen centers with C-Pn bond distances of 189.8 (P), 199.9 (As), and 217.5 (Sb) pm. The structures are those of internal zwitterions with imidazolium ion character in the heterocyclic ring and a pentafluoropnictanide anion bonded to C2. Adducts of BF3 with 1,3-dimesitylimidazol-2-ylidene and 4,5-dichloro-1,3-dimesitylimidazol-2-ylidene are also reported for comparison. Although the reactivity of chlorinated and non-chlorinated carbenes varies considerably, the spectroscopic and structural properties of analogous adducts are remarkably similar.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received September 6, 1999. Accepted (revised) October 20, 1999
Rights and permissions
About this article
Cite this article
Arduengo III, A., Davidson, F., Krafczyk, R. et al. Carbene Complexes of Pnictogen Pentafluorides and Boron Trifluoride. Monatshefte für Chemie 131, 251–265 (2000). https://doi.org/10.1007/s007060070101
Issue Date:
DOI: https://doi.org/10.1007/s007060070101