The unimolecular chemistry of ionized 1- and 2-butanethiol

Add time:08/20/2019    Source:sciencedirect.com

Threshold photoelectron-photoion coincidence (TPEPICO) spectroscopy was employed to study the unimolecular chemistry of metastable ionized 1- and 2-butanethiol. The ions were both found to form two products, m/z 56 (C4H+·8) and m/z 60 (C2H4S+·) corresponding to the losses of H2S and C2H6 respectively. On the basis of their breakdown diagrams, it was evident that these two ions do not interconvert prior to fragmentation. From energetic arguments, the C4H+·8 ion formed by the two thiolswas found to be either 2-butene+· or isobutene+·. This is in contrast to the analogous ionic 1-butanol, which loses only H2O to form methylcyclopropane ions, and 2-butanol, which loses CH3, CH4, C2H5 and C2H6. RRKM theory was used to model the rates for each fragment channel to obtain barrier heights for their formation and aid in identifying the nature of the C4H+·8 ion formed by the two thiols. The ionization energy of 1-butanethiol was determined to be 9.14 ± 0.02 eV and that of 2-butanethiol to be 9.03 ± 0.02 eV.

We also recommend Trading Suppliers and Manufacturers of 1-Butanethiol (cas 109-79-5). Pls Click Website Link as below: cas 109-79-5 suppliers

Prev:Phase equilibria on five binary systems containing 1-Butanethiol (cas 109-79-5) and 3-methylthiophene in hydrocarbons
Next:Mechanistic kinetics of catalytic oxidation of 1-Butanethiol (cas 109-79-5) in light oil sweetening)