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±¾ÈË·ÇרҵGAUSSIANʹÓÃÕߣ¬ÇëÎÊGAUSSIANÔõô¼ÆËãoverlap matrix £¬ molecular orbital coefficients and energies £¿Èç¹û¿ÉÒÔ£¬ÇëÁгöÊäÈëÎļþ£¬Ð»Ð»£¡ F0= SCC ,û·¨ÏÔʾ¡¡ where S is the intermolecular overlap matrix, and C and are the dimer Kohn-Sham orbital¡¯s coefficients and energies. The noninteracting molecular orbitals of the two individual molecules are calculated separately by the standard self- consistent field procedure. These noninteracting orbitals are then used to construct the dimer Kohn-Fock matrix. Namely, it takes directly the unperturbed individual molecule¡¯s orbital and density matrix to guarantee that originally, the two mol- ecules are noninteracting, and only when putting them to- gether, one can get interaction information with respect to the individual molecules in the spirit of first-order perturba- tion. All of the calculations are performed with the GAUSSIAN 03 package ÏêϸµÄÇë¿´PHYSICAL REVIEW B 79, 115203 2009 [ Last edited by ºØÒÇ on 2011-10-17 at 16:20 ] |
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