A New Calculation of the Latent Heat of Sublimation of Carbon and the First C–H Dissociation Energy in Methylene from Electron Impact Data

1951 ◽  
Vol 19 (6) ◽  
pp. 793-793 ◽  
Author(s):  
F. H. Field
Keyword(s):  
Electron Impact ◽  
Latent Heat ◽  
Dissociation Energy ◽  
Impact Data

Reactions of excited molecules. II. Reactions of phenylhydrazones on electron impact

1968 ◽  
Vol 21 (3) ◽  
pp. 761 ◽  
Author(s):  
WD Crow ◽  
JL Occolowitz ◽  
RK Solly
Keyword(s):  
Electron Impact ◽  
Quantitative Assessment ◽  
Bond Cleavage ◽  
Thermal Excitation ◽  
Aromatic Ketones ◽  
Excited Molecules ◽  
Impact Data

Electron impact data are presented for the phenylhydrazones of a series of aromatic ketones C6H5-CO-R (R = H, CH3, CD3, C2H5, C6H6), and are discussed in comparison with the results of thermal excitation. Whereas pyrolysis resulted in extensive four-centre migration of R to nitrogen, followed by (or synchronous with) cleavage of the N-X bond, the electron-impact breakdown is largely dominated by N-N bond cleavage. A semi-quantitative assessment is made of the rearrangements which do occur, and the stereochemistry of these and related reactions is discussed.

Ionization Potentials of Aromatic Molecules Determined by Analytical Interpretation of Electron Impact Data

1966 ◽  
Vol 21 (10) ◽  
pp. 1580-1584 ◽  
Author(s):  
J. H. D. Eland ◽  
P. J. Shepherd ◽  
C. J. Danby
Keyword(s):  
Electron Impact ◽  
Mass Spectrometer ◽  
Aromatic Amines ◽  
Ionization Efficiency ◽  
Ionization Potentials ◽  
Analytical Technique ◽  
Aromatic Molecules ◽  
Impact Data ◽  
Best Parameters

The analytical technique proposed by MORRISON 1 has been tested on ionization efficiency curves obtained using an unmodified mass spectrometer. Ionization potentials of a series of aromatic amines have been found by this method and have been used to determine the best parameters for use in calculations by the STREITWIESER ω-technique.

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