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Ab initio molecular dynamics for molecules with variable numbers of electrons | Ivano Tavernelli
; Rodolphe Vuilleumier
; Michiel Sprik
; | Date: |
27 May 2002 | Journal: | Phys Rev Lett, 88 (21), 213002 | Abstract: | The ab initio molecular dynamics method is extended to treat exchange of electrons between molecules and a reservoir at fixed chemical potential. The method is based on a rigorously grand-canonical density functional approach using separate potential energy surfaces for each oxidation state. It is shown that the resulting discontinuous dependency of excess charge on chemical potential is consistent with the statistical thermodynamics of equilibrium gas-phase reactions. The method is illustrated by an application to the adiabatic redox dynamics of an aniline molecule. | Source: | PubMed, pmid12059475 | Services: | Forum | Review | Favorites |
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