ansa-Calcocenes: trans-Ph₂(CH₃)₂C₂(η⁵-C₅H₄)₂Ca(DME)

The title compound, (1,2-di-η⁵-cyclo­penta­dienyl-1,2-dimethyl-trans-1,2-di­phenyl­ethane)(1,2-di­methoxy­ethane)­calcium, trans-Ph₂(CH₃)₂C₂(η⁵-C₅H₄)₂Ca(DME) or [Ca(C₂₆H₂₄)(C₄H₁₀O₂)], was synthesized by reductively coupling 6,6-methyl­phenyl­fulvene with activated calcium in the presence of di­methoxy­ethane (DME). The trans isomer was isolated by fractional crystallization. The Ca atom is four-coordinate and is η⁵-bonded to both cyclo­penta­dienyl rings [Ca—Cp(centroid) distance = 2.381 (3) Å] and the O atoms of the coordinated solvent chelate ligand [Ca—O = 2.350 (2) and 2.404 (2) Å].