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Germaaluminocenes are formed by salt metathesis reactions of dipotassium germacyclopentadienediides with pentamethylcyclopentadienylaluminum dichloride. The reactivity pattern of these sandwich complexes is determined by the electrophilic central aluminum atom and by the nucleophilic dicoordinated germanium center. Surprisingly, the products formed by reactions with Lewis acids, Lewis bases, amphiphiles and compounds with polar double bonds are those expected from the reaction of a hypothetical aluminagermapentafulvene with these types of reagents. This suggests that germaaluminocenes are synthetic equivalents to these pentafulvenes. [ABSTRACT FROM AUTHOR]

This article explores the synthesis and reactivity of germaaluminocene compounds, which are complexes containing germanium and aluminum atoms. The behavior of these compounds is determined by the interaction between the electrophilic aluminum atom and the nucleophilic germanium center. The article describes the synthesis of specific germaaluminocene compounds and their characterization using various analytical techniques. It also discusses the chemical reactions and structures of these compounds, as well as their reactivity with other elements and transition metal complexes. The findings provide valuable insights into the properties and behavior of germaaluminocene compounds. This research was supported by the Deutsche Forschungsgemeinschaft. [Extracted from the article]