منابع مشابه
The Mass Spectra of Some Hexaalxyl Disiloxanes
The electron impact induced fragmentations of some hexaalkyl disiloxanes have been studied with respect to the effect of the size and the positions of different alkyl substituents at the Siatoms. Positional isomers of hexaalkyl disiloxanes differing by the distribution of alkyl groups over both Si-atoms can be easily distinguished by large intensity differences of fragment ions in the 70eV EI-m...
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In the work, a study of mass fragmentation routes by the electron-impact mass spectrometry data has been examined for two open chain intermediates of indole derivatives and two pyrroloquinolines. By the isolation of open chain intermediate and the mass spectra, the structures of pyrroloquinoline have been confirmed.
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Polychlorinated 2-phenoxyphenols were studied by negative ion mass spectrometry. Common to almost all of the methane enhanced negative ion mass spectra were (M-1)-, (M-36-)-., (M-37)-, (M-72)-., and chorinated quinoxide ions. The (M-36)-. ion does not apparently form in a mechanism analogous to the thermal or photochemical ring closure of these compounds to form the chlorinated dioxins. The chl...
متن کاملMass Spectra of Some Organa-Lead and Organa-Mercury Compounds
:\<Iass spectra of letramethyl and tetraethyl lead and of dimethyl, diet llyl, and di-n-butyl mercury were obtained with a Co nsolidated 21102 mass spec trometer. Monoisotopic spectra were calculated by using the isotopic abundance derived from eac h spectrum. A variation in the lead isotope abundance was observed in the commercially available lead a lkyls. No variation was observed a mong t he...
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ژورنال
عنوان ژورنال: Journal of the Mass Spectrometry Society of Japan
سال: 1979
ISSN: 1884-3271,1340-8097
DOI: 10.5702/massspec1953.27.59