Multiply negatively charged aluminium clusters and fullerenes Multiply negatively charged aluminium clusters and fullerenes were generated in a Penning trap using the electron bath technique. Aluminium monoanions were generated using a laser vaporisation source. After this two three and four times negatively charged aluminium clusters were generated for the first time. This research marks the first observation of tetra anionic metal clusters in the gas phase. Additionally doubly negatively charged fullerenes were generated. The smallest fullerene dianion observed contained 70 atoms. Mehrfach negativ geladene Aluminium Cluster Fullerene Ionenfallen Flugzeitmassenspektrometrie Polyanions Aluminium cluster Fullerene Ion traps Time of flight mass spectrometry