charge exchange mass spectraion+moleculechemical reactionThe absolute cross section for ionisation and fragmentation of benzene by 29 positive ions of 10 eV kinetic energy and different but known electron recombination energies (eVi) have been determined. A plot of these sections against the ...
The fragmentation pathways of several substituted 1,4-naphthoquinones have been studied by multi stage mass spectrometry. Methods for the recognition and i... WG Stensen,E Jensen - 《Journal of Mass Spectrometry》 被引量: 11发表: 2010年 Characterization of three propane‐inducible oxygenases in ...
International Journal of Mass Spectrometry & Ion ProcessesMartin W B,O’Malley R M.The non-resonantmultiphoton ionization and fragmentation of ben-zene,phenylacetylene and benzonitrile.Int.J.Mass Spectrum Ion Processes. 1984Martin W B, O' Malley R M. The non-resonant multiphoton ionization and ...
Fragmentation patternElectron impactMass spectrumUnder electron impact conditions the mass spectrometric behaviour of secondary and tertiary para -substituted benzenesulphinamide derivatives has been studied. The fragmentation modes of these compounds, including a characteristic H 2 O loss from the molecular ...
massspectrumnitrosubstitutedbenzenesulphonicacidBy means of mass-spectrometric method the saturated vapors of benzenesulphonic acid and 2-nitro-, 3-nitro- and 2,4,6-trinitrosubstituted acids was shown to consist of corresponding monomeric molecular species. These compounds are thermally stable in vacuum...
The mass spectrum of 1-(3-methoxyphenyl)-3-(4-trideuteromethoxyphenyl)-propane shows that this effect is even stronger than the effect of para methoxy groups on the benzylic cleavage. From measurements of appearance potentials it is concluded that the substituent effect is not due to a ...
The mass spectrum and the optical spectrum were studied as functions of time for the process and products of flashinitiated decomposition of benzenediazonium-3-carboxylate. The products of decomposition include a transient parent C6H4 species of mass 76. The fragmentation pattern and its time ...
The model is applied to calculate the light intensity dependence of the benzene (MPD) mass spectrum at 2590 laser wavelength. RRKM calculations for benzene and its products are performed in order to check the ladder switching assumption. Theoretically computed MPD mass spectra agree well with the ...
The method described here relies on the abundance of a diagnostic fragment ion which is present in the spectrum of one isomer but is absent or shows different relative intensities in the spectra of the other isomers. Deuterium labelling was used to demonstrate some specific fragmentation mechanisms....
The method described here relies on the abundance of a diagnostic fragment ion which is present in the spectrum of one isomer but is absent or shows different relative intensities in the spectra of the other isomers. Deuterium labelling was used to demonstrate some specific fragm...