scholarly journals Excited-state potential-energy surfaces of metal-adsorbed organic molecules from linear expansion Δ-self-consistent field density-functional theory (ΔSCF-DFT)

2013 ◽  
Vol 139 (1) ◽  
pp. 014708 ◽  
Author(s):  
Reinhard J. Maurer ◽  
Karsten Reuter
Keyword(s):  
Potential Energy Surfaces ◽  
Density Functional ◽  
Organic Molecules ◽  
Linear Expansion ◽  
Functional Theory ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
State Potential ◽  
Energy Surfaces

A MinMax self-consistent-field approach for auxiliary density functional theory

2009 ◽  
Vol 130 (11) ◽  
pp. 114106 ◽  
Author(s):  
Andreas M. Köster ◽  
Jorge M. del Campo ◽  
Florian Janetzko ◽  
Bernardo Zuniga-Gutierrez
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Functional Theory ◽  
Field Approach ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field

On the dissociation energy of Ti(OH2)+. An MCSCF, CCSD(T), and DFT study

1996 ◽  
Vol 74 (10) ◽  
pp. 1824-1829 ◽  
Author(s):  
A. Irigoras ◽  
J.M. Ugalde ◽  
X. Lopez ◽  
C. Sarasola
Keyword(s):  
Dissociation Energy ◽  
Density Functional ◽  
Basis Sets ◽  
Coupled Cluster ◽  
Functional Theory ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Self Consistent Field Theory ◽  
Effective Core Potentials

The dissociation energy of the Ti(OH2)+ ion–molecule complex was calculated by the multiconfigurational self-consistent field theory, coupled cluster theory, and two density functional theory based methods, using both all-electron basis sets and effective core potentials. The calculations show that approximate density functional theory gives results in better agreement with experiment than either the multiconfigurational self-consistent field theory or the coupled cluster theory, with both all-electron basis sets and effective core potentials. Nevertheless, the optimized geometries and harmonic vibration frequencies are very similar, irrespective of the level of theory used. The interconfigurational energy ordering of the two valence electronic configurations dn−1s and dn−2s2 of the 4F electronic state of the titanium cation were also calculated and are discussed. Key words: ab initio, dissociation energy, ion–molecule complex, effective core potentials, transition metals.

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