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Expanding the Chemistry of Cationic N ‐Heterocyclic Carbenes: Alternative Synthesis, Reactivity, and Coordination Chemistry
Author(s) -
Hildebrandt Björn,
Raub Stephan,
Frank Walter,
Ganter Christian
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201103707
Subject(s) - cationic polymerization , carbene , chemistry , reactivity (psychology) , steric effects , ligand (biochemistry) , coordination complex , cyclic voltammetry , metal , stereochemistry , medicinal chemistry , polymer chemistry , organic chemistry , electrochemistry , catalysis , medicine , biochemistry , alternative medicine , receptor , electrode , pathology
A new synthetic route to complexes of the cationic N ‐heterocyclic carbene ligand 2 has been developed by the attachment of a cationic pentamethylcyclopentadienylruthenium ([RuCp*] + ) fragment to a metal‐coordinated benzimidazol‐2‐ylidene ligand. The coordination chemistry and the steric and electronic properties of the cationic carbene were investigated in detail by experimental and theoretical methods. X‐ray structures of three carbene–metal complexes were determined. The cationic ligand 2 is a poorer overall electron donor relative to the related neutral carbene, which is evident from cyclic voltammetry (CV) and IR measurements.