Abstract
Field ionization mass spectra of pyridine is measured using 10{mu}m activated wire. protonation of pyridine, is observed as an intense peak in the mass spectra. Charge distribution of pyridine molecule is calculated using the modified neglect of diatomic overlap (MNDO) technique, and consequently proton attachment is proposed to be on the nitrogen atom. Temperature dependence of (M+H){sup +} ion is investigated and discussed. MNDO calculations of the protonated species are done, and the proton affinity of pyridine molecule is estimated. Time dependence of the field ionization process of pyridine and protonated ions are observed and discussed. 5 figs.
Zahran, N F;
Ghoniem, H;
Helal, A I;
[1]
Rasheed, N
[2]
- Physics Dept., Nuclear Research Center, AEA., Cairo, (Egypt)
- Nuclear Material Authority, Cairo, (Egypt)
Citation Formats
Zahran, N F, Ghoniem, H, Helal, A I, and Rasheed, N.
Protonation of pyridine. Vol. 2.
Egypt: N. p.,
1996.
Web.
Zahran, N F, Ghoniem, H, Helal, A I, & Rasheed, N.
Protonation of pyridine. Vol. 2.
Egypt.
Zahran, N F, Ghoniem, H, Helal, A I, and Rasheed, N.
1996.
"Protonation of pyridine. Vol. 2."
Egypt.
@misc{etde_455725,
title = {Protonation of pyridine. Vol. 2}
author = {Zahran, N F, Ghoniem, H, Helal, A I, and Rasheed, N}
abstractNote = {Field ionization mass spectra of pyridine is measured using 10{mu}m activated wire. protonation of pyridine, is observed as an intense peak in the mass spectra. Charge distribution of pyridine molecule is calculated using the modified neglect of diatomic overlap (MNDO) technique, and consequently proton attachment is proposed to be on the nitrogen atom. Temperature dependence of (M+H){sup +} ion is investigated and discussed. MNDO calculations of the protonated species are done, and the proton affinity of pyridine molecule is estimated. Time dependence of the field ionization process of pyridine and protonated ions are observed and discussed. 5 figs.}
place = {Egypt}
year = {1996}
month = {Mar}
}
title = {Protonation of pyridine. Vol. 2}
author = {Zahran, N F, Ghoniem, H, Helal, A I, and Rasheed, N}
abstractNote = {Field ionization mass spectra of pyridine is measured using 10{mu}m activated wire. protonation of pyridine, is observed as an intense peak in the mass spectra. Charge distribution of pyridine molecule is calculated using the modified neglect of diatomic overlap (MNDO) technique, and consequently proton attachment is proposed to be on the nitrogen atom. Temperature dependence of (M+H){sup +} ion is investigated and discussed. MNDO calculations of the protonated species are done, and the proton affinity of pyridine molecule is estimated. Time dependence of the field ionization process of pyridine and protonated ions are observed and discussed. 5 figs.}
place = {Egypt}
year = {1996}
month = {Mar}
}