Now showing items 1-10 of 11
Evidence for Pseudo‐Jahn—Teller Effect in XeF6
(The American Institute of Physics, 1967-06-01)
Molecular Structure of XeF6. II. Internal Motion and Mean Geometry Deduced by Electron Diffraction
(The American Institute of Physics, 1968-03-15)
The distribution of internuclear distances in gaseous XeF6 exhibits unusually diffuse XeF6 bonded and F–F geminal nonbonded peaks, the latter of which is severely skewed. The distribution proves the molecule cannot be a ...
Electron Diffraction Study of Monomethyl‐ and Dimethylphosphine
(The American Institute of Physics, 1960-03)
The structural parameters of gaseous monomethyl‐ and dimethylphosphine were determined by the sector‐microphotometer method of electron diffraction. Center of gravity bond distances and standard errors for the two molecules ...
Reflection of Electrons by Standing Light Waves: A Simple Theoretical Treatment
(The American Institute of Physics, 1967-03-15)
The reflection of electrons by standing light waves, i.e., the stimulated Compton scattering proposed by Kapitza and Dirac, has been treated by applying the Born approximation. The probability that an electron will be ...
Influence of Nonbonded Interactions on Molecular Geometry and Energy: Calculations for Hydrocarbons Based on Urey—Bradley Field
(The American Institute of Physics, 1967-11-15)
A modified Urey—Bradley potential energy function comprised of quadratic terms for bond stretches, bond‐angle bends, and torsional displacements together with analytical expressions for pairwise nonbonded interactions was ...
Electron‐Diffraction Study of Ammonia and Deuteroammonia
(The American Institute of Physics, 1968-09-15)
The gas‐phase structures of NH3 and ND3 molecules were determined by the sector‐microphotometer method of electron diffraction. The following internuclear distances rgrg and mean amplitudes lele with estimated standard ...
Effects of Electron Correlation in X‐Ray and Electron Diffraction. IV. Approximate Treatment for Many‐Electron Atoms
(The American Institute of Physics, 1966-12-15)
A simple scheme is proposed for predicting effects of electron correlation on intra‐atomic electron—electron radial distribution functions and on intensities of x rays scattered by gas atoms. It makes use of a relationship ...
Electron Densities from Gas‐Phase Electron Diffraction Intensities. II. Molecular Hartree–Fock Cross Sections
(The American Institute of Physics, 1969-10-01)
Differential cross sections for electron scattering based on molecular Hartree–Fock electron densities are compared with cross sections based on the independent‐atom approximation for the molecules C2, N2, O2, F2, and CO. ...
Electron‐Diffraction Structural Study of Polymeric Gaseous Hydrogen Fluoride
(The American Institute of Physics, 1969-04-15)
Electron diffraction patterns with molecular interference features extending beyond s = 35Å−1s=35Å−1 were obtained for gaseous self‐associated HF introduced under its own vapor pressure at −19° and at +22°C through a ...
Electron Densities from Gas‐Phase Electron Diffraction Intensities. I. Preliminary Considerations
(The American Institute of Physics, 1969-10-01)
The intensity of electrons and x rays scattered by a freely rotating molecule is determined, in the kinematic approximation, solely by the nuclear–nuclear, electron–nuclear, and electron–electron radial distribution functions ...