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[求助]
GAUSSIAN怎么計(jì)算overlap matrix?
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本人非專業(yè)GAUSSIAN使用者,請(qǐng)問GAUSSIAN怎么計(jì)算overlap matrix , molecular orbital coefficients and energies ?如果可以,請(qǐng)列出輸入文件,謝謝! F0= SCC ,沒法顯示…… 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 詳細(xì)的請(qǐng)看PHYSICAL REVIEW B 79, 115203 2009 [ Last edited by 賀儀 on 2011-10-17 at 16:20 ] |

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地溝油冶煉專家
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專家經(jīng)驗(yàn): +458 |

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地溝油冶煉專家
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專家經(jīng)驗(yàn): +458 |
| 如果你問“怎么計(jì)算overlap matrix”:gaussian至少有兩種算法。iop(3/38=2)用標(biāo)準(zhǔn)公式算。目前默認(rèn)的prism方法很繁瑣,思路是先把所有積分轉(zhuǎn)化成標(biāo)準(zhǔn)的雙電子積分一般公式,然后用統(tǒng)一的方法計(jì)算,有點(diǎn)畫蛇添足的感覺。 |


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