[Ge12{FeCp(CO)2}8{FeCp(CO)}2]: A Ge12 Core Resembles the Arrangement of the High-Pressure Modification Germanium (II)

Similar yet different: The reaction of a GeBr solution with K[FeCp(CO)2] (Cp=η‐C5H5) gives [Ge12{FeCp(CO)2}8{FeCp(CO)}2] (1), whose oblong, highly cross‐linked cluster core reveals a cut‐out of the high‐pressure solid‐state structure of germanium (II) (see scheme). Mass spectrometric investigations on the gas‐phase species [Ge6{FeCp(CO)2}6{FeCp(CO)}]− (2) and theoretical calculations on 1 and 2 illuminate the formation of the metalloid cluster 1.