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1 Dec 1943

Volume 11, Issue 12, pp. 535-562


Absorption Spectra of Some Organic Solutions in the Vacuum Ultraviolet

J. R. Platt, I. Rusoff, and H. B. Klevens

J. Chem. Phys. 11, 535 (1943); http://dx.doi.org/10.1063/1.1723797 (10 pages) | Cited 14 times

Online Publication Date: 22 December 2004

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A search for a suitable solvent for extending the absorption curves of some organic compounds into the vacuum ultraviolet led to the discovery that n‐hexane and n‐heptane give satisfactory transmission to 1700A, in 0.3‐mm cells. The transmission limits of several solvents are given; and the absorption curves in this region are plotted for a number of organic compounds, showing especially the double‐bond peak at 1840A from octene‐3. It is demonstrated that a fluorite spectrograph of the Cario‐Schmitt‐Ott design is fast and convenient to use in such studies and is therefore well suited to routine quantitative analysis in this region (2500–1700A) when low dispersion (20A/mm) is acceptable.

The Electrostatic Contribution to Hindered Rotation in Certain Ions and Dipolar Ions in Solution. I

Terrell L. Hill

J. Chem. Phys. 11, 545 (1943); http://dx.doi.org/10.1063/1.1723798 (7 pages) | Cited 5 times

Online Publication Date: 22 December 2004

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From experimentally determined dissociation constants and structural parameters, effective dielectric constants are calculated for a few substances. This allows in each case an estimate of the electrostatic contribution to hindered rotation. For dithionic acid, whose dissociation constants are not known, a reasonable DE must be assumed in order to make the same calculation for the various possible ionic species. The influence of these results on ionic equilibria in dithionic acid is then discussed in some detail.

The Electrostatic Contribution to Hindered Rotation in Certain Ions and Dipolar Ions in Solution. II

Terrell L. Hill

J. Chem. Phys. 11, 552 (1943); http://dx.doi.org/10.1063/1.1723799 (6 pages) | Cited 3 times

Online Publication Date: 22 December 2004

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The previous treatment of ethylene diamine, oxalic acid, glycine, α‐alanine, leucine, α‐amino butyric acid, and dithionic acid is extended here to analogous compounds with one additional angle of rotation: 1,3‐propane diamine, malonic acid, β‐alanine, and pyrophosphoric acid.

The Attainment of Thermal Equilibrium Between a Gas and a Hot Surface

Paul M. Doty

J. Chem. Phys. 11, 557 (1943); http://dx.doi.org/10.1063/1.1723800 (3 pages) | Cited 6 times

Online Publication Date: 22 December 2004

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The Extension of the Attractive Energy of a Solid into an Adjacent Liquid or Film and the Decrease of Energy with Distance

William D. Harkins and George Jura

J. Chem. Phys. 11, 560 (1943); http://dx.doi.org/10.1063/1.1723801 (2 pages)

Online Publication Date: 22 December 2004

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The Relationship Between the Energy of Adsorption of a Vapor on a Solid and of Immersion of the Solid in a Liquid

George Jura and William D. Harkins

J. Chem. Phys. 11, 561 (1943); http://dx.doi.org/10.1063/1.1723802 (2 pages)

Online Publication Date: 22 December 2004

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