Calcium Carbene Complexes


(Orzechowski, Jansen, Harder
 J. Am. Chem. Soc. 2006)





(Orzechowski, Harder
 Organometallics 2007)

The first calcium carbene complexes with a formal electrostatic "double bond" between a R2C2- unit and Ca2+ have been obtained in the form of a bis(iminophosphorane)-methandiide complex.

Substitution of the Me3Si-substituent for the much larger 2, 6-diisopropylphenyl group results in formation of a monomeric calcium carbene complex.