Mass Spectra of the Tetramethyl Compounds of Carbon Silicon , Germanium , Tin , and Lead 1 Vernon
نویسنده
چکیده
Mass spectra of C(CI-I3)" Si(CI-I3)" Ge(CI-I3)" Sn(CI-I3)" and Pb (CI-Ia), were obtained with a Consolidated 21103 mass spectrometer. I sotopic abundan ces of carbon , si licon , germanium, tin, and lead were obtained from t he observed spectra and used to calculate the monoisotopic spectra. The mass spectra of t he Group IV tetramethyls a re qualitatively similar. The principal ion in each case results from t he dissociation of one methyl group . The molecule ion and ions res ulting from t he dissocia t ion of hydrogen atoms a re rare. H ydrides of t he atom ions and t he mono-, di, and tri-met hyl ions were observed. Some evidence is pointed out for the possible formation of t he CI-I3+ ion and t he C2I-I 5+ ion in neopentane as hydrides of t he ce nt ral carbon atom.
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تاریخ انتشار 2011