Detection of ion states of S2 to S8 by electron impact

SSOH and HSSO Radicals: An Experimental and Theoretical Study of [S2OH]0/+/- Species

“…This is consistent with earlier studies reporting that thermally relaxed S 2 + is unreactive with H 2 O . However, thermal conditions are unlikely in our experiments and low-lying electronically excited states (i.e., S 2 + ( 4 Π u )) are known to be also formed by electron impact of S 2 , although their lifetime is not known. 34c, It must be noted that, to detect the [S 2 OH] + ion, one has to work with a large excess of water which causes extensive self-protonation by H 2 O + . The reaction 2 of H 2 O + and S 2 is computed to be exothermic by 30.3 kcal mol -1 with respect to the formation of 1 (CBS-Q), in such case the charge exchange to S 2 is expected to be a competing process though the efficiency is not known.…”

Ionization Energies and Dyson Orbitals of the Iso-electronic SO2, O3, and S3 Molecules from Electron Propagator Calculations

“…Photoelectron spectra, electronic structure and bonding of sulfur dioxide, ozone and its sulfur-substituted counterpart, thiozone, have been attracting attention from experimental and theoretical groups for a few decades now. − The reasons are at least twofold. First, these species play an important role in both the terrestrial atmosphere (ozone layer; acid rains caused by anthropogenic emission of SO 2 ) and that of other planets (a possible greenhouse effect on ancient Mars) and in the chemical industry (S 3 is found in bitumen bottom residue, just to mention one industrial example).…”

Matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry analyses of Grubbs catalysts and ferrocene derivatives using sulfur as matrix

“…The ionization energies (IEs) of elemental sulfur to form S n + were compared with IEs of other matrices (pyrene, anthracene, α ‐terthienyl). According to Table S1, the average IEs of the obtained sulfur clusters S n (n = 2~8) were ranging from 8.8 to 10.2 eV, which are higher than the IEs of pyrene, anthracene and α ‐terthienyl (7.426, 7.439 and 7.3 eV, respectively). This implies that elemental sulfur is a charge‐transfer matrix with higher ionization capability than aromatic matrices (pyrene, anthracene and α ‐terthienyl).…”

“…They reported the generation of series of singly charged sulfur cluster cations (S n + ; n = 2–11) and anions (S n − ; n = 1–15) by direct laser ionization . On the basis of these previous studies, we systematically summarized the ionization energies (IEs) of elemental sulfur cluster cations (Table S1) and proposed the charge‐transfer ionization mechanism when elemental sulfur was used as matrix for analyzing organometallics such as Grubbs catalysts 1( 1 ~ 5 , 6BF 4 ~ 7BF 4 ) and ferrocene derivatives ( 8 ~ 10 ), by MALDI‐TOFMS.…”