1999, Vol.28, No.10
The syntheses and characterizations are described for carbene•lithium complexes in which the lithium center is ligated only by carbon atoms. A single crystal X-ray diffraction structure determination on one adduct confirms the coordination environment. The C-Li distance at the carbene center is 215.5 pm. All other coordination to the lithium center originates from a substituted η5-cyclopentadienyl ligand with an average C–Li distance of 225.4 (7) pm.