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Bis(pentamethylcyclopentadienyl)magnesium:  Unexpected Determination of the Until Now Unknown Molecular Structure of the Crystalline Compound

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posted on 15.05.2003, 00:00 by Jean Vollet, Elke Baum, Hansgeorg Schnöckel
The structure of bis(pentamethylcyclopentadienyl)magnesium, Mg(C5Me5)2 (1), in the solid state has been determined by X-ray diffraction. The experimental results are described and discussed in comparison to structural properties of the higher alkaline-earth metallocenes MCp*2 (M = Ca, Sr, Ba) as determined in the gas phase or in the solid state. Structural trends of 1 in comparison to the isoelectronic species [LiCp*2]-, BeCp*2, and [AlCp*2]+ are also presented.