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Expressions for the molecular friction constant based on the acoustic continuum and small‐step diffusion models have been compared with experimental data. The integral describing ζ was evaluated by assuming an ( n, m ) potential and by substituting internal energy and pressure for terms...
The importance of permeation time‐lag measurements for the detection and study of ``anomalous'' diffusion in a simple way is discussed. Measurement of a total of four time‐lag quantities is proposed and their properties investigated for time‐dependent ``non‐Fickian'' behavior,...
By considering the deformation of the free ions and within the framework of the exchange charge model (ECM) of Dick and Overhauser and the technique of symmetrical orthoganalization of Löwdin, we have calculated the radial dependence of the repulsive potential for ionic gases and solids. The...
Paramagnetic resonance spectra in solutions at room temperature were studied during irradiation with ultraviolet light. The radical CH 3 ĊOHCOCH 3 , the acetoin radical, was produced from diacetyl in the presence of good H‐atom donors. Using p ‐dioxane as the donor, the radical produced from...
The ultraviolet absorptions of the V ← N transitions of C 2 H 4 and C 2 D 4 have been reinvestigated. The strongest observed bands are found to fit the empirical expressions: C 2 H 4 , (cm −1 ) = 46697+807 ν ν ̄ ( cm − 1 ) = 46697 + 807 ν ; C 2 D 4 , (cm −1 ) = 46948+547 ν ν ̄ ( cm...
A three‐dimensional single crystal x‐ray analysis of (CH 3 CH 2 ) 2 NH⋅8⅔H 2 O has been carried out. The crystals are orthorhombic, with a =13.44 Å, b =11.77 Å, c =27.91 Å, and space group Pbcn. The compound is a clathrate hydrate, and the most notable feature of the water framework is...
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