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The infrared spectra of H 2 S in phases III, II, and I were studied at 66, 112, and 140°K, respectively. That of D 2 S was studied in phase III at 66°K. The spectra of phase III consist of extremely sharp lines and the structure must be ordered, probably with eight molecules in a primitive unit...
The theory of the second virial coefficient, A 2 ( M 2 , T ), for dilute polymer solutions is investigated from the point of view, first developed by Zimm, of the Ursell‐Mayer‐like development in terms which successively represent increasing numbers of contacts between molecular subunits of...
Perovskite‐structured compounds have been prepared containing manganese oxide with praseodymium, neodymium, and dysprosium oxides. X‐ray crystallographic data have been obtained for these compounds, and unit cell edge values of 3.82, 3.80, and 3.70 A are found for PrMnO 3 , NdMnO 3 , and...
Measurements of the complex shear compliance ( J * = J ′— iJ ″) of crystalline polymers (polytetrafluorethylene, linear polyethylene, and polyvinyl stearate) at closely spaced frequencies in the audio‐frequency range have resulted in the discovery of multiple frequency dispersions of the...
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