Evidence for an Equilibrium between an N-heterocyclic Carbene and Its Dimer in Solution.
Evidence for the Wanzlick equilibrium between carbene 1 and dibenzotetraazafulvalene (1)(2) at ambient temperature has been found (see scheme). Enetetramines of type (1)(2) can also be cleaved by coordinatively unsaturated transition metal compounds to form dicarbene complexes.
Hahn
FE
Anorganisch-Chemisches Institut Westfälische Wilhelms-Universität Wilhelm-Klemm-Strasse 8, 48149 Münster (Germany).
Wittenbecher
L
Le Van D
Fröhlich
R