Fig. 3

Mass spectral analysis of carbon and related species. Selected region of mass spectrum showing mass peaks for elemental carbon and complex carbon ions from a specimen prepared from MeCpPtMe₃ at room temperature via a IBAD and b EBAD. Note the presence of Ga in (a) as it was prepared by IBAD. c The mass spectrum from a cryogenically prepared and environmentally transferred specimen of MeCpPtMe₃ does not show evidence of elemental carbon or complex carbon ion mass peaks