Motivated by the recent experimental observations of multiply positively charged fullerene ions Cnk+, n=56, 60, 70, k=1–7, the doubly charged trimer C32+ is investigated by multireference configuration interaction computations. Studying the lowest potential energy surfaces of various electronic states, several local minima are found that entail not only metastability of the system, but the involved large and wide barriers render C32+ almost stable against dissociative tunneling. Our computations predict a linear configuration as the most favorable one for C32+, with a 1Σg+ ground state and an energy slightly below the minima found for the lowest triplet state 3Σu+ or occurring in C2v geometry (state 1A1). Stability and additional properties of C32+ are discussed and compared with those of other trimer dications. Moreover, this study includes accurate data for low‐lying states of the dimer ions C2+ and C22+ that are of relevance for the dissociation channels of C32+.

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