Evidence of the formation and conversion of unstable thionyl isocyanate: Gas-phase spectroscopic studies

Wang, Weigang; Yao, Li; Zeng, Xiaoqing; Ge, Maofa; Sun, Zheng; Wang, Dianxun; Ding, Yihong
December 2006
Journal of Chemical Physics;12/21/2006, Vol. 125 Issue 23, p234303
Academic Journal
Thionyl diisocyanate which is unstable at ambient temperature is generated from a heterogeneous reaction of gaseous thionyl dichloride with silver cyanate and studied for the first time in the gas phase at 298 K. N-isocyanatoformyl sulfinylimide is also observed with photoelectron spectroscopy in the gas phase for the first time. The conversion of thionyl diisocyanate to N-isocyanatoformyl sulfinylimide via 1,3 shift at different temperatures is studied by using photoelectron spectroscopy and mass spectroscopy with the help of theoretical computations. On the basis of combined observations and quantum chemical calculations, possible 1,3-isocyanato shifts and dissociation processes for thionyl isocyanate and its cation have been discussed in detail.


Related Articles

  • Ionization of the glycerin molecule by the electron impact. Zavilopulo, A.; Shpenik, O.; Markush, P.; Kontrosh, E. // Technical Physics Letters;Oct2014, Vol. 40 Issue 10, p829 

    The paper describes experimental method for and presents the results of studying positive ion yields produced due to direct and dissociative electron-impact ionization of the glycerin molecule. The mass spectra of the glycerin molecule are studied in the range of mass numbers of 10-95 amu at...

  • Electron ionization and dissociation of aliphatic amino acids. Papp, P.; Shchukin, P.; Kocˇísˇek, J.; Matejcˇík, Sˇ. // Journal of Chemical Physics;9/14/2012, Vol. 137 Issue 10, p105101 

    We present experimental and theoretical study of electron ionization and dissociative ionization to the gas phase amino acids valine, leucine, and isoleucine. A crossed electron/molecular beams technique equipped with quadrupole mass analyzer has been applied to measure mass spectra and ion...

  • Specific features of the dissociative ionization of methane molecules. Zavilopulo, A.; Mykyta, M.; Shpenik, O. // Technical Physics Letters;Oct2012, Vol. 38 Issue 10, p947 

    Experimental techniques and results of a mass-spectrometric investigation of the yield of positive ions formed as a result of the dissociative electron-impact ionization of methane molecules. It is established that the ionization energy of CH molecule is 12.62 ± 0.25 eV. Possible...

  • Electron ionization of methane: The dissociation of the methane monocation and dication. Ward, Michael D.; King, Simon J.; Price, Stephen D. // Journal of Chemical Physics;1/14/2011, Vol. 134 Issue 2, p024308 

    Time-of-flight mass spectrometry and two-dimensional coincidence techniques have been used to determine, for the first time, the relative precursor-specific partial ionization cross sections following electron-methane collisions. Precursor-specific partial ionization cross sections quantify the...

  • Electron ionization of SiCl4. King, Simon J.; Price, Stephen D. // Journal of Chemical Physics;2/21/2011, Vol. 134 Issue 7, p074311 

    Relative partial ionization cross sections (PICS) for the formation of fragment ions following electron ionization of SiCl4, in the electron energy range 30-200 eV, have been determined using time-of-flight mass spectrometry coupled with an ion coincidence technique. By this method, the...

  • Electron-impact-induced fragmentation of proline molecule. Vukstich, V.; Romanova, L.; Megela, I.; Papp, A.; Snegursky, A. // Technical Physics Letters;Oct2014, Vol. 40 Issue 10, p901 

    The formation of ionized products upon single and dissociative ionization of proline (CHNO) molecule by electron impact at high (11.5 MeV) and low (below 150 eV) energies has been studied using mass-spectrometric techniques. The mass-spectra of proline molecule have been obtained and interpreted...

  • Electron Induced Ionization Of Molecules With Plasma-Technological Relevance. Basner, Ralf // AIP Conference Proceedings;2003, Vol. 680 Issue 1, p73 

    This article describes recent experimental results for the dissociative electron impact ionization of the SiF4 and B2H6 molecules using the time-of-flight mass spectrometric technique. A detailed description of the experimental method is given. Complete sets of the absolute ionization cross...

  • Electron-impact ionization of sulfur in the gas phase. Zavilopulo, A.; Shpenik, O.; Markush, P.; Mykyta, M. // Technical Physics Letters;Jan2014, Vol. 40 Issue 1, p13 

    The procedure and results of studying the yield of positive ions formed via electron-impact dissociative ionization of sulfur are described. The ionization energy of the ground molecule and appearance energies of fragmentary ions are derived from the ionization efficiency curves. The dynamics of...

  • Mass-spectrometric investigation of coal gases from samples with a low and high degree of coalification. Zavilopulo, A.; Mykyta, M.; Shpenik, O. // Technical Physics;Jul2012, Vol. 57 Issue 7, p923 

    The methods and results of experimental investigation into the composition of gases by mass spectrometry with electron impact ionization are described. Experiments are performed on a crossed-beams setup with ion separation and detection using a monopole mass spectrometer with an upgraded ion...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics