Summary
The concept of the Brueckner orbital is examined, following a resurgence of interest in wavefunctions constructed from them. The distinction between Self Consistent Field, Natural and Brueckner orbitals are discussed. Total electron densities are calculated for several examples, and correlation densities are studied. It is found that the Brueckner orbitals are more localised than SCF orbitals. The total electron density constructed from the Brueckner reference determinant with Brueckner orbitals gives qualitatively similar pictures as other correlated methods. Brueckner orbitals are found to show dissociation well.
Similar content being viewed by others
References
Brueckner KA (1954) Phys Rev 96:508
Nesbet RK (1958) Phys Rev 109:1632
Kutzelnigg W, Smith VH (1964) J Chem Phys 41:896
Larsson S, Smith VH (1969) Phys Rev 78:137
Handy NC, Pople JA, Head-Gordon M, Raghavachari K, Trucks GW (1989) Chem Phys Lett 164:185
Löwdin PO (1955) Phys Rev 97:1474
Löwdin PO, Shull H (1956) Phys Rev 101:1730
Bender CF, Davidson ER (1966) J Chem Phys 70:2675
Shavitt I, Rosenberg BJ, Palalikit S (1976) Int J Quant Symp No 10:33
Dykstra CE (1977) Chem Phys Lett 45:466
Purvis GD, Bartlett RJ (1982) J Chem Phys 76:1910
Hampel C, Peterson KA, Werner HJ (1992) J Chem Phys Lett 190:1
Nerbrant PO, Roos B, Sadlej AJ (1979) Int J Quant Chem 15:135
Kobayashi R, Handy NC, Amos RD, Trucks GW, Frisch MJ, Pople JA (1991) J Chem Phys 95:6723
Simandiras ED, Amos RD, Handy NC (1987) Chem Phys 1114:9
CADPAC; The Cambridge Analytic Derivatives Package, Issue 5, Cambridge 1992. A suite of quantum chemistry programs developed by Amos RD with contributions from Alberts IL, Andrews JS, Colwell SM, Handy NC, Jayatilaka D, Knowles PJ, Kobayashi R, Koga N, Laidig KE, Maslen PE, Murray CW, Rice JE, Sanz J, Simandiras ED, Stone AJ, Su MD
Huzinaga S (1965) J Chem Phys 42:1293
Dunning TH (1970) J Chem Phys 53:2823
Dunning TH (1971) J Chem Phys 55:716
Hoy AR, Mills IM, Strey G (1972) Mol Phys 24:1265
Winnewisser G, Maki AG, Johnson DR (1971) J Mol Spect 39:149
Herzberg G (1966) Molecular spectra and molecular structure, Vol. 3, Electronic spectra and electronic structure of polyatomic molecules. Van Nostrand, Princeton
Tanaka T, Morino Y (1974) J Mol Spec 33:538
Wang L, Boyd RJ (1989) J Chem Phys 90:1083
Boyd RJ, Wang L (1989) J Comp Chem 10:367
Meyer H, Schweig A, Zittlau W (1982) Chem Phys Lett 92:637
Wiberg KB et al. (1992) J Phys Chem 96:671
Frisch MJ, Del Bene JE (1989) Int J Quant Chem Symp 23:362
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
van Heusden, C.M., Kobayashi, R., Amos, R.D. et al. Electron densities from the Brueckner Doubles method. Theoret. Chim. Acta 86, 25–39 (1993). https://doi.org/10.1007/BF01113514
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01113514