ChemInform Abstract: CHEMICAL CONSEQUENCES OF ELECTRON IMPACT. NEUTRAL C4H8 FRAGMENTS EXPELLED FROM MOLECULAR IONS IN THE GAS PHASE

1977 ◽  
Vol 8 (6) ◽  
pp. no-no
Author(s):  
F. B. BURNS ◽  
T. H. MORTON
Keyword(s):  
Gas Phase ◽  
Electron Impact ◽  
Molecular Ions

Radiation less transitions in gas phase molecular ions

1980 ◽  
Vol 77 ◽  
pp. 705-718 ◽  
Author(s):  
Sydney Leach ◽  
Gérald Dujardin ◽  
Guy Taieb
Keyword(s):  
Gas Phase ◽  
Molecular Ions

Mass spectra of 4,4-dimethyl-A-homo-4a,6-cholestadien-3-ols, 4,4-dimethyl-A-homo-5-cholestene-3,4a-diols and their derivatives

1982 ◽  
Vol 47 (10) ◽  
pp. 2768-2778
Author(s):  
Antonín Trka ◽  
Helena Velgová
Keyword(s):  
Carbon Atom ◽  
Electron Impact ◽  
Mass Spectra ◽  
Molecular Ions

Partial electron impact induced mass spectra are given of 3α-hydroxy-, 3β-hydroxy-, 3β-methoxy-, 3α-acetoxy- and 3β-acetoxy-4,4-dimethyl-A-homo-4a,6-cholestadienes, 3α,5α-epoxy-4,4-dimethyl-A-homo-5-cholestane, isomeric 4,4-dimethyl-A-homo-5-cholestene-3α(β),4aα(β)-diols, their 3-acetoxy derivatives and 3-methyl ethers. The fragmentation of the molecular ions of these substances involves the usual elimination of substituents (in the form of H2O, CH3OH, CH3COOH, CH2CO), but the most abundant and characteristic ions are products of the contraction of ring A (to a six- or five-membered one), accompanied by expulsion of a fragment containing the carbon atom C(4) with both methyls.

Linear free energy relationships in CN bond dissociations in molecular ions of 4-substitutedN-(2-furylmethyl)anilines in the gas phase

2007 ◽  
Vol 42 (11) ◽  
pp. 1496-1503 ◽  
Author(s):  
Eduardo A. Solano Espinoza ◽  
Elena Stashenko ◽  
Jairo Martínez ◽  
Uriel Mora ◽  
Vladimir Kouznetsov
Keyword(s):  
Free Energy ◽  
Gas Phase ◽  
Molecular Ions ◽  
Linear Free Energy Relationships ◽  
Linear Free Energy ◽  
Energy Relationships

Effect of structural factors on the disintegration of the molecular ions of nitrophenylisoxazoles during electron impact

1974 ◽  
Vol 10 (4) ◽  
pp. 393-396
Author(s):  
K. K. Zhigulev ◽  
R. A. Khmel'nitskii ◽  
S. D. Sokolov ◽  
N. M. Przheval'skii
Keyword(s):  
Electron Impact ◽  
Molecular Ions ◽  
Structural Factors

Experimental studies of electron impact dissociation of molecular ions

1996 ◽  
Author(s):  
Nada Djurić ◽  
Yang-Soo Chung ◽  
Barry Wallbank ◽  
Gordon H. Dunn
Keyword(s):  
Electron Impact ◽  
Experimental Studies ◽  
Molecular Ions ◽  
Electron Impact Dissociation

Mass spectral study ofO- andS-aryl dimethylthiocarbamates under electron impact conditions: Newman-Kwart rearrangement in the gas phase

2001 ◽  
Vol 15 (22) ◽  
pp. 2127-2134 ◽  
Author(s):  
S. Prabhakar ◽  
Paramita Kar ◽  
S. P. Mirza ◽  
V. V. S. Lakshmi ◽  
K. Nagaiah ◽  
...  
Keyword(s):  
Gas Phase ◽  
Electron Impact ◽  
Spectral Study ◽  
Mass Spectral ◽  
Mass Spectral Study

Water loss from ester molecular ions upon electron impact

1979 ◽  
Vol 14 (5) ◽  
pp. 286-288 ◽  
Author(s):  
Theodore L. Folk ◽  
Lawson G. Wideman ◽  
Kirkwood S. Cottman
Keyword(s):  
Electron Impact ◽  
Water Loss ◽  
Molecular Ions
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