Abstract
Reduction of C70 with alkaline earth and rare earth metals dissolved in liquid ammonia results in metal fulleride solvates AC70⋅nNH3 (A = Ca, Sr, Ba, Eu, Yb) containing linear polymeric, anionic chains ∞1[C702−]. The compounds were characterised by means of Raman‐spectroscopy and single crystal structure determination. The accurate crystal structure analysis of [Sr(NH3)8]C70⋅3NH3, determined with atomic resolution, allowed for a comparison with results of quantum chemical calculations. The nature of the C‐C bonds in the fulleride is analysed leading to a model explaining the unexpected polymerisation of C702−
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