Journal of Chemical Sciences

, Volume 117, Issue 5, pp 477–483 | Cite as

Dynamic behavior of chemical reactivity indices in density functional theory: A Bohn-Oppenheimer quantum molecular dynamics study

  • Shubin Liu


Dynamic behaviors of chemical concepts in density functional theory such as frontier orbitals (HOMO/LUMO), chemical potential, hardness, and electrophilicity index have been investigated in this work in the context of Bohn-Oppenheimer quantum molecular dynamics in association with molecular conformation changes. Exemplary molecular systems like CH 5 + , Cl (H2O)30 and Ca2+ (H2O)15 are studied at 300 K in the gas phase, demonstrating that HOMO is more dynamic than LUMO, chemical potential and hardness often fluctuate concurrently. It is argued that DFT concepts and indices may serve as a good framework to understand molecular conformation changes as well as other dynamic phenomena.


Chemical potential hardness electrophilicity index dynamics HOMO LUMO QMD 


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Copyright information

© Indian Academy of Sciences 2005

Authors and Affiliations

  • Shubin Liu
    • 1
  1. 1.Department of Academic Technology & NetworksUniversity of North CarolinaChapel HillUSA

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