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hxwyy2005金蟲(chóng) (正式寫(xiě)手)
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[交流]
castep計(jì)算過(guò)渡態(tài)時(shí)能量問(wèn)題
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用castep在優(yōu)化反應(yīng)物時(shí),最終的能量是以Final Enthalpy 給出的,而計(jì)算過(guò)渡態(tài),能量該用哪一個(gè)呢,比如下面數(shù)據(jù): Final energy, E = -23552.53877772 eV Final free energy (E-TS) = -23552.69116168 eV (energies not corrected for finite basis set) NB est. 0K energy (E-0.5TS) = -23552.61496970 eV +++++++++++++++++++++++++++++++++++++++++++++++++++++++ Transition State Found! Energy of reactant: -23553.64863 eV Energy of product: -23554.16735 eV Energy of transition state: -23552.69116 eV Location of transition state: 0.44741 Barrier from reactant: 0.95747 eV Barrier from product: 1.47619 eV Energy of reaction: -0.51871 eV +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 因?yàn)檫^(guò)渡態(tài)反應(yīng)物中的能量和單純優(yōu)化時(shí)能量相差很大啊,該用那個(gè)能量啊 |
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