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A detailed study has been made of the phases produced and their geometric distribution during formation of Edison‐type tubular positive nickel electrodes. The initial charging in lithiated electrolytes converts the to a beta phase having a solid solution range for di‐ and tetravalent nickel. The beta crystalline struc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared Studies of Ligand-Ligand Interaction in Dihalogenodiammineplatinum(II) ComplexesKazuo Nakamoto, Paul J. McCarthy, Junnosuke Fujita, Robert A. Condrate, and George T. BehnkeCite this: Inorg. Chem. 1965, 4, 1, 36–43Publication Date (Print):January 1, 1965Publication H…
The object of this paper is to find out why the calculated rare-earth crystal-field parameters do not agree with those determined experimentally. As is well known, in explaining the 4f spectra in the rare-earth compounds, one needs relatively few crystal-field constants, Vnm's. These Vnm's have been measured for many…
Abstract Solution and diffusion of He, Ne, Ar, Kr, Xe, H 2 , N 2 , O 2 , and n ‐C 4 H 10 have been studied in filled dimethylpolysiloxane elastomers, at temperatures between 0 and −37°C. for all penetrants, and down to −78°C. for some. Crystallization of the rubber, commencing at about −50°C. resulted in large decreas…
The electronic energy levels determined from absorption spectra of U4+ in crystals containing UCl62— complexes are identified as to irreducible representation and the resulting set of levels used to determine the least-squares best values of Slater Fk integrals, spin—orbit ζ5f, and fourth- and sixth-degree crystalline…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron Spin Resonance of α- and β-Cobalt Phthalocyanine1aJacques M. Assour and Walter K. KahnCite this: J. Am. Chem. Soc. 1965, 87, 2, 207–212Publication Date (Print):January 1, 1965Publication History Published online1 May 2002Published inissue 1 January 1965https://pubs.…
The induction period for the inorganic precipitation of calcium carbonate was examined over a wide range of supersaturations. Results suggest that inorganic precipitation in average sea water would require about $$10^{5}$$ years. If most of the bicarbonate were converted to carbonate, precipitation could occur in 500…
Thin film deposits of Cu, Ni, and Rh were obtained by hydrogen reduction of , , , and from the gas phase (tfa = trifluoroacetylacetonate anion; hfa = hexafluoroacetylacetonate anion). The chelates are well suited for gas plating purposes by virtue of their high volatility and ease of reduction by hydrogen. The deposit…
Electronic currents in insulators are strongly controlled by trap sites and therefore trapping can account for long-term charge and discharge currents. Some general calculations are carried out for the discharge of disorderly insulators; in most cases the discharge current decreases inversely with time. Measurements a…
The vibrational spectra of four isotopic nitric acid molecules including the 15N and D species have been obtained in the vapor and solid phases. The Raman spectra of anhydrous and wet normal nitric acid were also studied. Previous assignment of the fundamental modes has been revised, and the spectra in the three phase…
The generalized equations of state governing the attainment of equilibrium have been formulated for bubbles (holes containing gas under pressure) and for voids (holes containing no gas). The equilibrium shape of bubbles is shown to be that which produces the minimum surface energy (γ) for a specific volume, and is uni…
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Techniques for physical and chemical evaluation of silicon oxide films formed by a wide variety of techniques have been developed. It has been established that by the use of infrared absorption spectroscopy, preferential etching procedures, precise optical measurements of thickness, density, and refractive indices, an…
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Abstract In this review paper, these types of molecular weight distribution found in typical polymers are described. It is pointed out that procedures for fractionating polymers usually yield incomplete information on molecular weight distribution unless the fractions are characterized for molecular weight. In additio…
Abstract Durch eine Erweiterung der Symmetrietransformationen für die Spindichte in Kristallen wird erreicht, daß neue Symmetriegruppen entstehen. Diese Gruppen stellen eine Verallgemeinerung der Shubnikov‐Gruppen oder magnetischen Raumgruppen dar und ermöglichen auch eine Beschreibung der Symmetrie von ebenen und räu…
The large differences in the activity of platinum‐on‐carbon anodes that could be produced by the choice of carbon indicated that an important chemical interaction existed between the platinum and the carbon surface. A chemical interaction was also indicated by electron‐spin‐resonance measurements on plain and platiniz…
Using a recently proposed concept of cell wall structure based on a multiplicity of lamellae coaxial with the cell, the effect of drying on the structure of the cell wall of bleached spruce sulphite tracheids has been examined by means of nitrogen adsorption. The data suggest that in the fully water-swollen wall there…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural Interconversions of Octahedral, Planar, and Tetrahedral Nickel(II) ComplexesA. Chakravorty, J. P. Fennessey, and R. H. HolmCite this: Inorg. Chem. 1965, 4, 1, 26–33Publication Date (Print):January 1, 1965Publication History Published online1 May 2002Published inis…
Relative values of the diffusion coefficients of the systems He–Ar, Ar–Xe, and He–Xe have been determined over the temperature range 0° to 120°C by a two-bulb method. The experimental diffusion coefficients, at 1 atm pressure, can be described by the following equations: He–Ar: log10D=1.684log10T−4.2902,Ar–Xe: log10D=…