Calcium Carbene Complexes

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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.