Now showing items 11-20 of 140
Electron diffraction study of the molecular structure of trifluoromethyl hypofluorite
(Elsevier, 1971-06)
The following structural parameters and estimated standard deviations were found for trifluoromethyl hypofluorite: rg(C-F) = 1.319 +/- 0.003 A, rg(C-O) = 1.395 +/- 0.006 A, rg(O-F) = 1.421 +/- 0.006 A, [angle-measured](F-C-F) ...
Electron diffraction study of the molecular structure of bis(trifluoromethyl)peroxide
(Elsevier, 1977-07)
The following structural parameters and estimated standard deviations (3[sigma]) have been found for (CF3O)2,: rg, (O-O) = 1.419 +/- 0.020 A, rg (C-O) = 1.399 +/- 0.009 A, rg (C-F) = 1.320 +/- 0.003 A, [angle](C-O-O) = ...
Phonon Raman spectra, molecular motions, and phase transitions of dimethylacetylene crystal
(Elsevier, 1973-07-15)
The phonon Raman spectra of crystals of dimethylacetylene, perdeutero-dimethylacetylene and their mixtures have been investigated down to 20[deg]K. The high temperature phase shows only one line and the low temperature ...
Molecular structure of F2POPF2: an electron diffraction study
(Elsevier, 1975-09)
The most important geometric parameters and associated uncertainties (2[sigma]) determined for F2POPF2 are the distances (rg) P-O = 1.631 +/- 0.010 A, P-F = 1.568 +/- 0.004 A, and angles POP = 135.2 +/- 1.8[deg], OPF = ...
The ground state fundamentals of p-benzoquinone and p-benzoquinone-d4
(Elsevier, 1974-03-30)
The solid state infrared and Raman spectra of p-benzoquinone and several isotopic derivatives are reported and compared with the results of previous solution and vapor phase studies and with the results of previously ...
An exactly solvable model for the Fermi contact interaction
(Springer-Verlag, 1979-06)
A model for the Fermi contact interaction is proposed in which the nuclear moment is represented as a magnetized spherical shell of radius r 0 . For a hydrogen-like system thus perturbed, the Schrödinger equation is solvable ...
Two‐point characteristic function for the Kepler–Coulomb problem
(The American Institute of Physics, 1975-10)
Hamilton’s two‐point characteristic function S (q2t2,q1t1) designates the extremum value of the action integral between two space–time points. It is thus a solution of the Hamilton–Jacobi equation in two sets of variables ...