ADDITION OF HCL, CL-2, COCL2 AND KI TO FULLERENE-FORMING BENZENE OXYGEN ARGON FLAMES

Gaseous HCl and Cl-2 as well as CoCl2 . 6H(2)O and KI dissolved in met hanol were added to fullerene-forming flat benzene/oxygen/argon flames burning at 75 mbar. The soot formed in the flames was collected and a nalysed by mass spectrometry using chemical ionization with CH4/N2O. I n the case of HCl or Cl-2 addition no formation of halogenated fullere nic compounds was observed, while the measurement of chlorine precurso r mass spectra showed the formation of a great number of chlorine-cont aining compounds, essentially polycyclic aromatic hydrocarbons (PAHs). The addition of CoCl6 . 6H(2)O led to the formation of C60OHCl by mea ns of ion-molecule reactions in the flame. After addition of CoCl2 . 6 H(2)O or KI, molecular masses corresponding to metal fullerene compoun ds like CoC58, CoC84, CoC92 and CoC1.34 or K2C56 and K2C66 were observ ed.