Evaluation of various processes for C60Fe production

Iron fullerides were prepared by chemical methods and in the electric are. The reactions were performed in toluene or benzene solution using aluminium chloride or nitric/acetic acid as activating agents, while ferrocene was u sed as a source of iron. Iron: carbon plasma was investigated by means of t he emission spectroscopy in order to determine the plasma temperature, C-2, Fe and Fe+ concentrations. The samples were evaluated by mass spectrometry , thermal analyses, X-ray diffraction and by Mossbauer spectroscopy which r evealed two doublers ascribed to the iron +2 and +3 ionization states, depe nding on thermal treatment of the samples. (C) 1999 Elsevier Science Ltd. A ll rights reserved.