SCF theory of intermolecular interactions without basis set superposition error
✍ Scribed by I. Mayer; Á. Vibök
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 530 KB
- Volume
- 136
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Special SCF LCAO MO type equations are derived, permitting "supermolecule" calculations for intermolecular interactions, excluding basis set superposition error (BSSE) from the beginning on the basis of the "chemical Hamiltonian approach". (No additional "monomer" calculations are necessary to correct for BSSE.) The formalism excluding the BSSE results in a non-Hermitean Fock matrix; an algorithm is proposed to obtain the required molecular orbitals, in which no integral transformation is needed.
📜 SIMILAR VOLUMES
Recently, two different but conceptually similar basis set Ž . superposition error BSSE free second-order perturbation theoretical schemes were developed by us that are being based on the chemical Hamiltonian Ž . approach CHA . Using these CHA-MP2 and CHA-PT2 methods, a comparison is made between th
## Abstract The intermolecular interaction energies of the deprotonated hydrogen‐bonded complexes F^−^(HF), F^−^(H~2~O), F^−^(NH~3~), Cl^−^(HF), SH^−^(HF), H~2~P^−^(HF), OH^−^(H~2~O), OH^−^(H~2~O)~2~, OH^−^(NH~3~), Cl^−^(H~2~O), SH^−^(H~2~O), H~2~P^−^(H~2~O), Cl^−^(NH~3~), SH^−^(NH~3~), H~2~P^−^(NH
The supermolecule interaction energies at the self-consistent field and the second-order Moller-Plesset perturbation theory levels are analyzed using the polarization approximation perturbation theory of intermolecular interactions. The results for the He-H+ complex show that the perturbation expans