The reactions of C2F5 radicals with neopentane and propane have been studied, using perfluoroethyl iodide as the free radical source. The Arrhenius parameters, based on A= 1013.36 cm3 mol–1 s–1 and E= 0 for the combination ...

DNO3 is found to have a freezing-point of –42.07°C, only 0.46 K lower than that of HNO3, and a molar enthalpy of fusion of 9917 ± 40 kJ mol–1(2370 ± 10 kcal mol–1), which is 5 % smaller than that of HNO3. The curvature of ...

E.s.r. studies of y-irradiatcd single crystals of a-glycinc and glycine-d3 between 77 and 403 K show that the primary radical anions are the only species trapped at 77 K. These arc converted to a mixture of radicals NH3CHCOO' ...

Measurements of fluorescence lifetime and depolarization have been made on dilute solutions of a number of polymer chains containing fluorescent groups. Bulky xanthydrol groups do not provide a sensitive measure of chain ...

The anodic behaviour of water is discussed in terms of a model in which discharge occurs via a cation radical intermediate which rapidly loses a proton to yield potential-determining hydroxyl radicals on the metal surface. ...

Thermal conductivities of the four pure gases n-butane, iso-butane, iso-pentanc and nco-pentane and of their binary mixtures with argon have been measured at 50 and 100°C. The thermal conductivities of all four polyatomic ...

Xanthone, which Ikis a ground state pK of -4.1, is shown to have a pK^j) value of +0.96 by fluorescence intensity measurements and a pK(7\) of +3.0 by triplet-triplet absorption measurements. The unusual order pK(7\) ...

Microwave absorption measurements (3, 8.5, 36 and 72 GHz) arc reported on three different molecular weight samples of polyCy-bcnzyl-L-glutamatc), PBLG, in two solvents. In each case a distinct absorption, often quite narrow ...

The exchange of n-butane with deuterium is catalyzed by tungsten films at temperatures below 250 K; the reaction involves mainly simple exchange with no evidence of self-poisoning. The adsorption of butane on tungsten at ...