Now showing items 41-50 of 50
The vibration-rotation energies of tetrahedral XY4 molecules : Part I. Theory of spherical top molecules
(Elsevier, 1961)
The theory of vibration-rotational perturbations in tetrahedral XY4 molecules has been reexamined in the light of the modern theory of angular momentum coupling. It is shown that, even to third order of approximation, the ...
Force fields for nitriles
(Elsevier, 1968-11)
A valence force field for nitriles based on the force field obtained for hydrocarbons is found to give very good agreement with the observed bands for several mono- and di-nitrile molecules. The average deviation between ...
Comment on enhanced Raman scattering from adsorbates on semiconductor surfaces
(Elsevier, 1984-11-02)
A recently published model of surface enhanced Raman scattering from adsorbed molecules on semiconductor surfaces is compared to our experimental results for amorphous carbon on PbTe. The model fails to account for the ...
A force field for secondary chlorides
(Elsevier, 1967-08)
A force field has been derived for monochloro- and 2,4-dichloro-hydrocarbons. The Snyder-Schachtschneider force field for hydrocarbons was used as a starting point, the constants associated with the secondary chlorine being ...
Tetrahedral approximation in normal coordinate calculations of high polymers
(Elsevier, 1965-06)
Linear and Nonlinear Measures and Seizure Anticipation in Temporal Lobe Epilepsy
(Kluwer Academic Publishers; Springer Science+Business Media, 2003-11)
In a recent paper, we showed that the value of a nonlinear quantity computed from scalp electrode data was correlated with the time to a seizure in patients with temporal lobe epilepsy. In this paper we study the relationship ...
A complete general valence force field for secondary chlorides
(Elsevier, 1973-12)
A general valence force field for secondary chlorides has been refined which includes torsional force constants based on assignments of low frequency modes in model compounds. This force field also incorporates force ...
Vibrational analysis of crystalline diketopiperazine--I. Raman and i.r. spectra
(Elsevier, 1984)
Raman and i.r. spectra have been obtained of diketopiperazine and five of its isotopic derivatives: (CONDCH2)2, (CONHCD2)2, (CONDCD2)2, (13CONHCH2)2 and (13CONDCH2)2. In addition to solution spectra and powder spectra at ...
Assignment of torsion and low frequency bending vibrations of secondary chlorides
(Elsevier, 1973-10)
Far infrared and Raman spectra of 2-chloropropane, 2-chlorobutane and dl- and meso-2,4-dichloropentane have been analyzed in order to assign the torsional force constants in the valence force field for secondary chlorides. ...
Vibrational spectra in the C---H stretching region and the structure of the polymethylene chain
(Elsevier, 1978)
The C---H stretching regions of both the Raman and i.r. spectra of the extended polymethylene chain have broad secondary maxima. In the case of the Raman spectrum, line shapes are dependent on the environment of the chain, ...