Fullerene contents of chlorinated C60 and C70 were determined with HPLC. n-Values of C60Cln and C70Cln were determined from mass increase during synthesis, MALDI-TOF mass spectrometry, PIXE, Nuclear Microprobe (12C[d,p]13C), and Electron Microprobe analysis. n-Values obtained immediately after synthesis were in the range 31-45. Best values obtained later were in the range 10-20. It is suggested that (i) the samples lost CS2 or CS2/CCl4, or Cl of “crystallization” after synthesis, (ii) after synthesis the samples lost Cl bound to C60 (iii) Cl was lost during the analysis, or (iv) some of all three.
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Heymann et al. (1999) studied this question.
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