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Formal insertion of buta-1,3-diynediyl moieties into all twelve CC single bonds of octamethoxycubane gives the explosive expanded cubane 1. Fourier-transform ion-cyclotron-resonance (FT-ICR) mass spectrometric studies show that 1 readily loses its eight MeO groups and subsequently rearranges into fullerene ions. In the positive ion mode, these ions undergo fullerene coalescence reactions.
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Manini et al. (2002) studied this question.
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