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

Journal of Chemical Sciences

Shubin Liu1¹ 

[1] Department of Academic Technology & Networks, University of North Carolina, Chapel Hill, North Carolina 27599-3455, USA$$

关键词: Chemical potential;    hardness;    electrophilicity index;    dynamics;    HOMO;    LUMO;    QMD.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown