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Intensities and polarization properties of vibrations in which mainly chlorine atoms are participating, are investigated theoretically for the dichlorobenzenes. It is assumed that the change of polarizability in these vibrations is connected primarily with displacements of the chlorine atoms and...
By making use of Polya's theorem and the groups of symmetries of the geometrical models representing unsubstituted parent compounds, it is possible to include the various kinds of isomerism in a single discussion. The number of isomers calculated by this procedure is the total number of all types.
A theory of the dissolution of three‐dimensional cross linked polymers is presented. The existence of a definite melting temperature is discussed in terms of molecular constants characterizing the gel.
A comparison of increasingly halogenated fluoresceins shows that, with increasing weight of halogen introduced, the principal visible absorption moves steadily to longer waves, as also the first ultraviolet band. At the same time the acid dissociation constants of the phenolic and carboxylic...
The activated complex theory of reaction rates is discussed critically. The transmission coefficients for a number of idealized energy surfaces have been computed quantum mechanically. It appears that curvature of the reaction path may introduce activation energy in addition to that caused by...
The infra‐red absorption spectrum from 2 to 14.5μ was determined for cyclohexane vapor. The number of bands found in the 700–1350 cm −1 region confirms the chair structure (symmetry D 3 d ) as the most stable at room temperature. The band envelopes are discussed and compare well with the...
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