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A general symmetry matrix, U n , has been derived which may be used to combine n equivalent coordinates in a molecule having the symmetry of any cyclic or dihedral point group of multiplicity n. The direct products U 2 × U n and U 2 × U 2 × U n may be used in the cases of 2 n and 4 n...
The infra‐red spectra of gaseous and liquid acrylonitrile have been studied from 2.5 μ to 25 μ with a spectrometer using LiF, CaF 2 , NaCl, and KBr prisms. The Raman spectrum of the liquid has been obtained, including intensity and polarization data. A normal coordinate calculation of the...
The first six characteristic numbers of the reduced wave equation ψ″+(λ—ξ 4 )ψ=0 have been calculated by a method of numerical integration. These values have been compared with the corresponding values obtained from the first, second, and third Wentzel‐Kramers‐Brillouin...
The heat of sublimation of graphite and the heats of dissociation of CO and C 2 , which have been the subject of much controversy in recent years, have been unambiguously established by the direct determination of the total vapor pressure of graphite by an equilibrium effusion method and by the...
Recently Tanford and Pease have shown that in a number of carbon monoxide flames the burning velocity increases as the calculated equilibrium concentration of hydrogen atoms in the flame front increases. They point out that this would be so if the propagation of the flame were dependent on the...
The data now available indicate quite strongly that the photo‐chemical decomposition of acetone proceeds mainly if not entirely by a free radical mechanism. The various steps are reviewed and the evidence for them given. At high pressures where wall effects may be neglected certain definite...
A. The absorption conductivity of n ‐butyl alcohol has been carefully determined by a calorimetric method, using two independent, specially purified samples. Its dielectric behavior proved in good agreement with Debye theory. The probable source of the error in earlier butyl alcohol...
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