On commuting unbounded self-adjoint operators. III

This paper investigates a certain model for couples of unbounded self-adjoint operators which commute on a common dense core.     

Reactive scattering of H and D atoms. II. isotope effect on the angular distribution of H,D + NO2

The chemical reactions of hydrogen and deuterium atoms with nitrogendioxide (NO₂) have been studied with crossed molecular beams. Angular and velocity distributions have been measured. The angular distribution peaks at small angles and shows a pronounced isotope effect; only 2̃4% of the available energy goes into translation. Al-though four very deep potential wells (2.1 eV) exist in the potential hypersurface no statistical complex is formed. The reaction can probably be described as intermediate between direct and complex scattering.     

The neutron decay of the resonance in the 12C + 16O system at Ec.m. = 19.7 MeV

The reaction ¹²C(¹⁶O, n)²⁷Si has been studied at nine incident energies in the range of E_cm = 19.39 to 22.6 MeV. At the known 19.7 MeV resonance two states at 15.37 and 17.04 MeV in ²⁷Si, probably with high spins, were strongly excited. The width of the resonance in these states is consistent with the known width of about 400 keV (c.m.). No resonating states were found above this resonance.     

Über neue Ester der Nicotinsäure mit natürlichen und synthetischen Sexualhormonen

Ohne ZusammenfassungAus dem Forschungslaboratorium der Lannacher Heilmittel Gesellschaft m. b. H. (Leiter: Prof. Dr. med. et Dr. rer. nat. Konrad L. Zirm)In Österreich und in anderen Ländern zum Patent angemeldet.     

Darstellung und eigenschaften von triorganogermanium-, silicium- und -kohlenstoffsulfinsäurederivaten

A number of hitherto unknown sulfinic acid derivatives of germanium, silicon and carbon, R₃MO₂SR, were prepared by reaction of anhydrous aliphatic aromatic silver sulfinates, RSO₂Ag, with triorgano IVa element halides of the type R₃MX (R  aliphatic or aromatic group; M  Ge, Si, ;; X  Cl, Br). Their ester-like structure and the trigonal pyramidal configuration of the R₃M group result unequivocally from ¹H NMR, mass, IR and Raman spectroscopic investigations. The methyl esters (CH₃)₃MO₂SCH₃ (M  Ge, Si, C) are compared with the already known sulfinato complexes of tin and lead, (CH₃)₃SnO₂SCH₃ and (CH₃)₃PbO₂SCH₃.