Floating spherical Gaussian orbital (FSGO) studies with a model potential: Application to two-valence-electron systems

1976 ◽  
Vol 41 (4) ◽  
pp. 329-333 ◽  
Author(s):  
Naba K. Ray ◽  
Jurgen Switalski
Keyword(s):  
Potential Application ◽  
Valence Electron ◽  
Model Potential ◽  
Electron Systems ◽  
Gaussian Orbital

scholarly journals An Improved Semi-Empirical SCF MO Method for Valence Electron Systems

1967 ◽  
Vol 40 (4) ◽  
pp. 1017-1017 ◽  
Author(s):  
Hiroshi Kato ◽  
Hideyuki Konishi ◽  
Teijiro Yonezawa
Keyword(s):  
Valence Electron ◽  
Electron Systems ◽  
Semi Empirical

A simplified core pseudopotential model for use in valence-electron molecular SCF calculations

1978 ◽  
Vol 31 (12) ◽  
pp. 2571 ◽  
Author(s):  
E Nagy-Felsobuki ◽  
JB Peel
Keyword(s):  
Valence Electron ◽  
Ground States ◽  
Model Potential ◽  
Basis Sets ◽  
Bond Lengths ◽  
The Core ◽  
Orbital Energies ◽  
Scf Calculations

A molecular valence-electron-only model potential (VEOMP) method is proposed in which the core-valence interpenetration term is replaced by an exponential screening function and the core-valence orthogonality is represented by a pseudopotential term in which the required parametrization is minimized without compromising the effectiveness of the method. This model has been incorporated in the GAUSSIAN 70 programs, and sample calculations, using the STO-3G and STO-6G minimum basis sets, are reported for the orbital energies and equilibrium bond lengths of the ground states of N2, PN and P2.

The Photoelectron Spectra the Chloro Toluenes

1987 ◽  
Vol 40 (4) ◽  
pp. 751 ◽  
Author(s):  
JB Peel ◽  
EI Vonnagyfelsobuki
Keyword(s):  
Ab Initio ◽  
Cross Section ◽  
Valence Electron ◽  
Model Potential ◽  
Ionization Potentials ◽  
Photoelectron Spectra ◽  
Molecule Model ◽  
Linear Correlations ◽  
Spectral Assignment

The HeI and HeII photoelectron spectra of the chloro toluenes have been measured. The spectra are assigned using HeI/HeII cross-section ratios and a composite-molecule model within an ab initio valence-electron-only model potential (VEOMP) framework. The order of the first two ionization potentials for the chloro toluenes is assigned as πS < πA which is contrary to the VEOMP assignment for benzal chloride and benzotrichloride , but is consistent with linear correlations using group electronegativities and σI scales. Furthermore, linear correlations using the first two ionization potentials of fluoro and chloro toluenes with group electronegativities are shown to be a useful aid in spectral assignment and, moreover, suggest that for benzyl fluoride and benzal chloride the most appropriate σI values are 0.20 and 0.31 respectively.

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