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The production of aluminum cluster tetra-anions, and thus the first observation of a tetra-anionic metal cluster in the gas-phase, is reported. The aluminum cluster polyanions were generated by use of the “electron-bath technique.” The smallest tetra-anion observed was Al2154-, containing 14% fewer atoms than expected from classical estimates of the tetra-anion appearance size. [ABSTRACT FROM AUTHOR]

The production of aluminum cluster tetra-anions, and thus the first observation of a tetra-anionic metal cluster in the gas-phase, is reported. The aluminum cluster polyanions were generated by use of the “electron-bath technique.” The smallest tetra-anion observed was Al2154-, containing 14% fewer atoms than expected from classical estimates of the tetra-anion appearance size. [ABSTRACT FROM AUTHOR]

The production of aluminum cluster tetra-anions, and thus the first observation of a tetra-anionic metal cluster in the gas-phase, is reported. The aluminum cluster polyanions were generated by use of the "electron-bath technique." The smallest tetra-anion observed was Al(215) (4-), containing 14% fewer atoms than expected from classical estimates of the tetra-anion appearance size.