後哈特里-福克方法

計算化學中,後哈特里-福克方法(英語:post-Hartree–Fock[1][2]是對哈特里-福克方法(HF)或自洽場方法(SCF)加以改進而發展的一系列方法。在哈特里-福克方法中,電子排斥力的計算使用了平均場論的方法,只考慮平均電子密度下的排斥力。這些方法增加了電子耦合項,更準確地考慮了電子間的排斥;

細節

HF-SCF程序對多體薛丁格方程的性質及其解集做出了幾點假設:

對於絕大多數系統而言,特別是激發態及化學反應(例如分子解離反應),上述假設中的第四條的影響是最大的。因此,術語「後哈特里-福克方法」常被用於表示計算電子校正的近似方法。

通常情況下,後哈特里-福克方法比哈特里-福克方法更加準確,但是也需要消耗更多的計算資源。

方法

相關方法

使用多個行列式的方法並非嚴格的後哈特里-福克方法,因為它們使用單​​個行列式作為參考,但是它們經常使用類似的擾動或組態相互作用方法來改進電子耦合效應的描述。這些方法包括:

參考文獻

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  8. ^ H. D. Meyer; U. Manthe & L. S. Cederbaum. The multi-configurational time-dependent Hartree approach. Chem. Phys. Lett. 1990, 165 (73). doi:10.1016/0009-2614(90)87014-I. 
  9. ^ Chr. Møller & M. S. Plesset. Note on an Approximation Treatment form Many-Electron Systems. Physical Review (The American Physical Society). October 1934, 46 (7): 618–622. Bibcode:1934PhRv...46..618M. doi:10.1103/PhysRev.46.618. 
  10. ^ Krishnan Raghavachari & John A. Pople. Approximate fourth-order perturbation theory of the electron correlation energy. International Journal of Quantum Chemistry (Wiley InterScience). February 22, 1978, 14 (1): 91–100. doi:10.1002/qua.560140109. 
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  12. ^ Larry A. Curtiss; Krishnan Raghavachari; Gary W. Trucks & John A. Pople. Gaussian‐2 theory for molecular energies of first‐ and second‐row compounds. The Journal of Chemical Physics (The American Institute of Physics). February 15, 1991, 94 (11): 7221–7231. Bibcode:1991JChPh..94.7221C. doi:10.1063/1.460205. 
  13. ^ Larry A. Curtiss; Krishnan Raghavachari; Paul C. Redfern; Vitaly Rassolov & John A. Pople. Gaussian-3 (G3) theory for molecules containing first and second-row atoms. The Journal of Chemical Physics (The American Institute of Physics). July 22, 1998, 109 (18): 7764–7776. Bibcode:1998JChPh.109.7764C. doi:10.1063/1.477422. 
  14. ^ William S. Ohlinger; Philip E. Klunzinger; Bernard J. Deppmeier & Warren J. Hehre. Efficient Calculation of Heats of Formation. The Journal of Physical Chemistry A (ACS Publications). January 2009, 113 (10): 2165–2175. PMID 19222177. doi:10.1021/jp810144q. 

進一步閱讀

  • Jensen, F. Introduction to Computational Chemistry. New York: John Wiley & Sons. 1999. ISBN 0471980854.