117133-85-4Relevant academic research and scientific papers
Radical Ions, 81. ENDOR Spectroscopic Investigations of Radical Cations of Aromatic Organosulfur Compounds
Bock, H.,Hierholzer, B.,Rittmeyer, P.
, p. 187 - 204 (2007/10/02)
Conditions for ENDOR measurements of organosulfur radical cations are discussed and tested.The one electron oxidation of a variety of aromatic sulfur compounds comprising benzene-1,2-dithiole, 1,4-dithiine, thianthrene and diphenylsulfide derivatives as well as 33S isotope-marked bis(2,5-dimethoxyphenyl)disulfide is accomplished using the oxygen-free, powerful and selective AlCl3/H2CCl2 reagent.Partly with substantial structural changes, paramagnetic M.+ species of 1,2-benzodithiete, 1,4-dithiine, thianthrene and diphenyl sulfide result.Their temperature-dependent ENDOR signal patterns provide numerous information e.g. on radical cation structure and dynamics, on the rather high sulfur spin populations or on the spin rotation interaction dominated relaxation behaviour.Accordingly, to obtain optimum ENDOR effects in organosulfur radical cations low temperature measurements are required, and especially for still undiscovered 33S ENDOR couplings, small g factor anisotropies and 33S spin densities appear to be necessary. - Keywords: ENDOR (Special, General Triple) Spectra, Temperature Dependence, Organosulfur Radical Cations, Structural Changes, Molecular Dynamics
ZUR DARSTELLUNG VON BENZODITHIET-DERIVATEN DURCH THERMOLYSE 1,2-DITHIO-SUBSTITUIERTER BENZOLE
Bock, H.,Rittmeyer, P.
, p. 291 - 308 (2007/10/02)
The thermal fragmentation of various 1,2-dithio-benzene derivatives R4C6S2(X) with R = H, CH3, F in order to split off favorable leaving molecules X = Cl, CO or H2C=CH2 and to generate the corresponding benzene-1,2-dithiete products (R4C6S2) is investigat
