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The optimization of MCSCF functions by application of the generalized brillouin theorem: The LiH2potential energy surface

✍ Scribed by Paul J. A. Ruttink; Joop H. Lenthe


Publisher
Springer
Year
1977
Tongue
English
Weight
540 KB
Volume
44
Category
Article
ISSN
1432-2234

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πŸ“œ SIMILAR VOLUMES


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Wave~~ctions which are sing& excited with respect to a given muIti~n~~~ation wa~fnnction in the sense of the pneralized Brillouin theorem are formed and the extended Cl problem is solved by variation or perturbation methods. After that the orbitais are properly contracted and the proess is repeated

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The analysis of the Brillouin conditions in a chain of groups is used to Ε½ . Ε½ . explain why self-consistent field SCF , multiconfigurational SCF MCSCF , or Ε½ . configuration interaction CI methods can lead to an unbalanced description of the potential energy hypersurfaces along symmetry-broken path

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The previously suggested generalized potential energy function (GPEF) is used for calculation of the X 'E+ state potential curve of SiF+ from the molecular constants. The procedure of the calculations is based on the optimization of nonlinear parameters p and n of GPEF. The obtained GPEF for SiF+ yi

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Second-order density functional methods where the correlation energy depends on the . second-order density matrix and on a density functional are used to introduce the Ε½ . electron correlation in two-configuration direct minimization TCDM ab initio electronic Ε½ . energy calculations of three-dimensi

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Bright (1973) has proved a theorem for a specific class of compartment systems. The theorem is here generalized, and it suggests that, occasionally, the steady-state whole-body mass of certain substances can be estimated from measurements of the mass concentration (e.g. specific activity) in bloo