scholarly journals Ab initio model potential study of local distortions around Cr+ and Cr3+ defects in fluorite

1991 ◽  
Vol 94 (12) ◽  
pp. 8158-8164 ◽  
Author(s):  
Luis Seijo ◽  
Zoila Barandiarán
Keyword(s):  
Ab Initio ◽  
Model Potential ◽  
Potential Study ◽  
Local Distortions

scholarly journals Ab initio model potential study of pressure effects on K2NaGaF6:Cr3+

1993 ◽  
Vol 98 (5) ◽  
pp. 4041-4046 ◽  
Author(s):  
Luis Seijo ◽  
Zoila Barandiarán ◽  
Lars G. M. Pettersson
Keyword(s):  
Ab Initio ◽  
Model Potential ◽  
Pressure Effects ◽  
Potential Study

scholarly journals The ab initio model potential method with the spin-free relativistic scheme by eliminating small components Hamiltonian

2001 ◽  
Vol 114 (14) ◽  
pp. 6000-6006 ◽  
Author(s):  
Kyosuke Motegi ◽  
Takahito Nakajima ◽  
Kimihiko Hirao ◽  
Luis Seijo
Keyword(s):  
Ab Initio ◽  
Potential Method ◽  
Model Potential

On the nature of the ground state of Cr(V) defects in YVO4: An ab initio model potential embedded-cluster study

2002 ◽  
Vol 90 (2) ◽  
pp. 751-758 ◽  
Author(s):  
José Luis Pascual ◽  
Zoila Barandiarán ◽  
Luis Seijo
Keyword(s):  
Ab Initio ◽  
Ground State ◽  
Model Potential

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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